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			875 lines
		
	
	
		
			27 KiB
		
	
	
	
		
			Markdown
		
	
	
			
		
		
	
	
			875 lines
		
	
	
		
			27 KiB
		
	
	
	
		
			Markdown
		
	
	
| <script>
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|   export default {
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|     data() {
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|       var checkAge = (rule, value, callback) => {
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|         if (!value) {
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|           return callback(new Error('年龄不能为空'));
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|         }
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|         setTimeout(() => {
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|           if (!Number.isInteger(value)) {
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|             callback(new Error('请输入数字值'));
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|           } else {
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|             if (value < 18) {
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|               callback(new Error('必须年满18岁'));
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|             } else {
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|               callback();
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|             }
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|           }
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|         }, 1000);
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|       };
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|       var validatePass = (rule, value, callback) => {
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|         if (value === '') {
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|           callback(new Error('请输入密码'));
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|         } else {
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|           if (this.ruleForm2.checkPass !== '') {
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|             this.$refs.ruleForm2.validateField('checkPass');
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|           }
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|           callback();
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|         }
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|       };
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|       var validatePass2 = (rule, value, callback) => {
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|         if (value === '') {
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|           callback(new Error('请再次输入密码'));
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|         } else if (value !== this.ruleForm2.pass) {
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|           callback(new Error('两次输入密码不一致!'));
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|         } else {
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|           callback();
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|         }
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|       };
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|       return {
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|         form: {
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|           name: '',
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|           region: '',
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|           date1: '',
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|           date2: '',
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|           delivery: false,
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|           type: [],
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|           resource: '',
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|           desc: ''
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|         },
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|         sizeForm: {
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|           name: '',
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|           region: '',
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|           date1: '',
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|           date2: '',
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|           delivery: false,
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|           type: [],
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|           resource: '',
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|           desc: ''
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|         },
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|         formInline: {
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|           user: '',
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|           region: ''
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|         },
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|         labelPosition: 'right',
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|         formLabelAlign: {
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|           name: '',
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|           region: '',
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|           type: ''
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|         },
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|         ruleForm: {
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|           name: '',
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|           region: '',
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|           date1: '',
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|           date2: '',
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|           delivery: false,
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|           type: [],
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|           resource: '',
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|           desc: ''
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|         },
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|         ruleForm2: {
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|           pass: '',
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|           checkPass: '',
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|           age: ''
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|         },
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|         formLabelWidth: '80px',
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|         rules: {
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|           name: [
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|             { required: true, message: '请输入活动名称', trigger: 'blur' },
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|             { min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur' }
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|           ],
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|           region: [
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|             { required: true, message: '请选择活动区域', trigger: 'change' }
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|           ],
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|           date1: [
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|             { type: 'date', required: true, message: '请选择日期', trigger: 'change' }
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|           ],
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|           date2: [
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|             { type: 'date', required: true, message: '请选择时间', trigger: 'change' }
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|           ],
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|           type: [
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|             { type: 'array', required: true, message: '请至少选择一个活动性质', trigger: 'change' }
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|           ],
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|           resource: [
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|             { required: true, message: '请选择活动资源', trigger: 'change' }
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|           ],
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|           desc: [
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|             { required: true, message: '请填写活动形式', trigger: 'blur' }
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|           ]
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|         },
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|         rules2: {
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|           pass: [
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|             { validator: validatePass, trigger: 'blur' }
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|           ],
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|           checkPass: [
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|             { validator: validatePass2, trigger: 'blur' }
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|           ],
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|           age: [
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|             { validator: checkAge, trigger: 'blur' }
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|           ]
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|         },
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|         dynamicValidateForm: {
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|           domains: [{
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|             value: '',
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|             key: Date.now()
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|           }],
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|           email: ''
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|         },
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|         numberValidateForm: {
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|           age: ''
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|         }
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|       };
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|     },
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|     methods: {
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|       onSubmit() {
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|         console.log('submit!');
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|       },
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|       submitForm(formName) {
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|         this.$refs[formName].validate((valid) => {
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|           if (valid) {
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|             alert('submit!');
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|           } else {
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|             console.log('error submit!!');
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|             return false;
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|           }
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|         });
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|       },
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|       resetForm(formName) {
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|         this.$refs[formName].resetFields();
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|       },
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|       removeDomain(item) {
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|         var index = this.dynamicValidateForm.domains.indexOf(item)
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|         if (index !== -1) {
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|           this.dynamicValidateForm.domains.splice(index, 1)
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|         }
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|       },
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|       addDomain() {
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|         this.dynamicValidateForm.domains.push({
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|           value: '',
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|           key: Date.now()
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|         });
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|       }
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|     }
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|   }
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| </script>
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| 
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| <style>
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|   .demo-form.demo-zh-CN {
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|     .el-select .el-input {
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|       width: 380px;
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|     }
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|     .el-form {
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|       width: 460px;
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|     }
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| 
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|     .line {
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|       text-align: center;
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|     }
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| 
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|     .el-checkbox-group {
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|       width: 320px;
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|       margin: 0;
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|       padding: 0;
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|       list-style: none;
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| 
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|       &:after, &:before {
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|         content: ' ';
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|         display: table;
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|       }
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|       &:after {
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|         clear: both;
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|         visibility: hidden;
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|         font-size: 0;
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|         height: 0;
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|       }
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| 
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|       .el-checkbox {
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|         float: left;
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|         width: 160px;
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|         padding-right: 20px;
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|         margin: 0;
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|         padding: 0;
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| 
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|         + .el-checkbox {
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|           margin-left: 0;
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|         }
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|       }
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|     }
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|     .demo-form-normal {
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|       width: 460px;
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|     }
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|     .demo-form-inline {
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|       width: auto;
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| 
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|       .el-input {
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|         width: 150px;
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|       }
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|       > * {
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|         margin-right: 10px;
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|       }
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|     }
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|     .demo-ruleForm {
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|       width: 460px;
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| 
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|       .el-select .el-input {
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|         width: 360px;
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|       }
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|     }
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|     .demo-dynamic {
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|       .el-input {
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|         margin-right: 10px;
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|         width: 270px;
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|         vertical-align: top;
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|       }
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|     }
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|     .fr {
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|       float: right;
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|     }
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|   }
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| </style>
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| 
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| ## Form 表单
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| 
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| 由输入框、选择器、单选框、多选框等控件组成,用以收集、校验、提交数据
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| 
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| ### 典型表单
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| 
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| 包括各种表单项,比如输入框、选择器、开关、单选框、多选框等。
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| 
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| :::demo 在 Form 组件中,每一个表单域由一个 Form-Item 组件构成,表单域中可以放置各种类型的表单控件,包括 Input、Select、Checkbox、Radio、Switch、DatePicker、TimePicker
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| ```html
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| <el-form ref="form" :model="form" label-width="80px">
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|   <el-form-item label="活动名称">
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|     <el-input v-model="form.name"></el-input>
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|   </el-form-item>
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|   <el-form-item label="活动区域">
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|     <el-select v-model="form.region" placeholder="请选择活动区域">
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|       <el-option label="区域一" value="shanghai"></el-option>
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|       <el-option label="区域二" value="beijing"></el-option>
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|     </el-select>
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|   </el-form-item>
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|   <el-form-item label="活动时间">
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|     <el-col :span="11">
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|       <el-date-picker type="date" placeholder="选择日期" v-model="form.date1" style="width: 100%;"></el-date-picker>
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|     </el-col>
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|     <el-col class="line" :span="2">-</el-col>
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|     <el-col :span="11">
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|       <el-time-picker type="fixed-time" placeholder="选择时间" v-model="form.date2" style="width: 100%;"></el-time-picker>
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|     </el-col>
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|   </el-form-item>
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|   <el-form-item label="即时配送">
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|     <el-switch v-model="form.delivery"></el-switch>
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|   </el-form-item>
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|   <el-form-item label="活动性质">
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|     <el-checkbox-group v-model="form.type">
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|       <el-checkbox label="美食/餐厅线上活动" name="type"></el-checkbox>
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|       <el-checkbox label="地推活动" name="type"></el-checkbox>
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|       <el-checkbox label="线下主题活动" name="type"></el-checkbox>
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|       <el-checkbox label="单纯品牌曝光" name="type"></el-checkbox>
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|     </el-checkbox-group>
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|   </el-form-item>
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|   <el-form-item label="特殊资源">
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|     <el-radio-group v-model="form.resource">
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|       <el-radio label="线上品牌商赞助"></el-radio>
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|       <el-radio label="线下场地免费"></el-radio>
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|     </el-radio-group>
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|   </el-form-item>
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|   <el-form-item label="活动形式">
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|     <el-input type="textarea" v-model="form.desc"></el-input>
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|   </el-form-item>
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|   <el-form-item>
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|     <el-button type="primary" @click="onSubmit">立即创建</el-button>
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|     <el-button>取消</el-button>
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|   </el-form-item>
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| </el-form>
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| <script>
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|   export default {
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|     data() {
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|       return {
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|         form: {
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|           name: '',
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|           region: '',
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|           date1: '',
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|           date2: '',
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|           delivery: false,
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|           type: [],
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|           resource: '',
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|           desc: ''
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|         }
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|       }
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|     },
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|     methods: {
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|       onSubmit() {
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|         console.log('submit!');
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|       }
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|     }
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|   }
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| </script>
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| ```
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| :::
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| 
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| :::tip
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| W3C 标准中有如下[规定](https://www.w3.org/MarkUp/html-spec/html-spec_8.html#SEC8.2):
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| > <i>When there is only one single-line text input field in a form, the user agent should accept Enter in that field as a request to submit the form.</i>
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| 
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| 即:当一个 form 元素中只有一个输入框时,在该输入框中按下回车应提交该表单。如果希望阻止这一默认行为,可以在 `<el-form>` 标签上添加 `@submit.native.prevent`。
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| :::
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| 
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| ### 行内表单
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| 
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| 当垂直方向空间受限且表单较简单时,可以在一行内放置表单。
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| 
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| :::demo 设置 `inline` 属性可以让表单域变为行内的表单域
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| ```html
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| <el-form :inline="true" :model="formInline" class="demo-form-inline">
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|   <el-form-item label="审批人">
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|     <el-input v-model="formInline.user" placeholder="审批人"></el-input>
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|   </el-form-item>
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|   <el-form-item label="活动区域">
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|     <el-select v-model="formInline.region" placeholder="活动区域">
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|       <el-option label="区域一" value="shanghai"></el-option>
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|       <el-option label="区域二" value="beijing"></el-option>
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|     </el-select>
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|   </el-form-item>
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|   <el-form-item>
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|     <el-button type="primary" @click="onSubmit">查询</el-button>
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|   </el-form-item>
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| </el-form>
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| <script>
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|   export default {
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|     data() {
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|       return {
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|         formInline: {
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|           user: '',
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|           region: ''
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|         }
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|       }
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|     },
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|     methods: {
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|       onSubmit() {
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|         console.log('submit!');
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|       }
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|     }
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|   }
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| </script>
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| ```
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| :::
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| 
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| ### 对齐方式
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| 
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| 根据具体目标和制约因素,选择最佳的标签对齐方式。
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| 
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| :::demo 通过设置 `label-position` 属性可以改变表单域标签的位置,可选值为 `top`、`left`,当设为 `top` 时标签会置于表单域的顶部
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| ```html
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| <el-radio-group v-model="labelPosition" size="small">
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|   <el-radio-button label="left">左对齐</el-radio-button>
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|   <el-radio-button label="right">右对齐</el-radio-button>
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|   <el-radio-button label="top">顶部对齐</el-radio-button>
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| </el-radio-group>
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| <div style="margin: 20px;"></div>
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| <el-form :label-position="labelPosition" label-width="80px" :model="formLabelAlign">
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|   <el-form-item label="名称">
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|     <el-input v-model="formLabelAlign.name"></el-input>
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|   </el-form-item>
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|   <el-form-item label="活动区域">
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|     <el-input v-model="formLabelAlign.region"></el-input>
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|   </el-form-item>
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|   <el-form-item label="活动形式">
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|     <el-input v-model="formLabelAlign.type"></el-input>
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|   </el-form-item>
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| </el-form>
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| <script>
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|   export default {
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|     data() {
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|       return {
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|         labelPosition: 'right',
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|         formLabelAlign: {
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|           name: '',
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|           region: '',
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|           type: ''
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|         }
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|       };
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|     }
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|   }
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| </script>
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| ```
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| :::
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| 
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| ### 表单验证
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| 
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| 在防止用户犯错的前提下,尽可能让用户更早地发现并纠正错误。
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| 
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| :::demo Form 组件提供了表单验证的功能,只需要通过 `rules` 属性传入约定的验证规则,并 Form-Item 的 `prop` 属性设置为需校验的字段名即可。校验规则参见 [async-validator](https://github.com/yiminghe/async-validator)
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| ```html
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| <el-form :model="ruleForm" :rules="rules" ref="ruleForm" label-width="100px" class="demo-ruleForm">
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|   <el-form-item label="活动名称" prop="name">
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|     <el-input v-model="ruleForm.name"></el-input>
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|   </el-form-item>
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|   <el-form-item label="活动区域" prop="region">
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|     <el-select v-model="ruleForm.region" placeholder="请选择活动区域">
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|       <el-option label="区域一" value="shanghai"></el-option>
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|       <el-option label="区域二" value="beijing"></el-option>
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|     </el-select>
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|   </el-form-item>
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|   <el-form-item label="活动时间" required>
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|     <el-col :span="11">
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|       <el-form-item prop="date1">
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|         <el-date-picker type="date" placeholder="选择日期" v-model="ruleForm.date1" style="width: 100%;"></el-date-picker>
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|       </el-form-item>
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|     </el-col>
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|     <el-col class="line" :span="2">-</el-col>
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|     <el-col :span="11">
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|       <el-form-item prop="date2">
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|         <el-time-picker type="fixed-time" placeholder="选择时间" v-model="ruleForm.date2" style="width: 100%;"></el-time-picker>
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|       </el-form-item>
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|     </el-col>
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|   </el-form-item>
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|   <el-form-item label="即时配送" prop="delivery">
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|     <el-switch v-model="ruleForm.delivery"></el-switch>
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|   </el-form-item>
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|   <el-form-item label="活动性质" prop="type">
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|     <el-checkbox-group v-model="ruleForm.type">
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|       <el-checkbox label="美食/餐厅线上活动" name="type"></el-checkbox>
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|       <el-checkbox label="地推活动" name="type"></el-checkbox>
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|       <el-checkbox label="线下主题活动" name="type"></el-checkbox>
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|       <el-checkbox label="单纯品牌曝光" name="type"></el-checkbox>
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|     </el-checkbox-group>
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|   </el-form-item>
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|   <el-form-item label="特殊资源" prop="resource">
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|     <el-radio-group v-model="ruleForm.resource">
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|       <el-radio label="线上品牌商赞助"></el-radio>
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|       <el-radio label="线下场地免费"></el-radio>
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|     </el-radio-group>
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|   </el-form-item>
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|   <el-form-item label="活动形式" prop="desc">
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|     <el-input type="textarea" v-model="ruleForm.desc"></el-input>
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|   </el-form-item>
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|   <el-form-item>
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|     <el-button type="primary" @click="submitForm('ruleForm')">立即创建</el-button>
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|     <el-button @click="resetForm('ruleForm')">重置</el-button>
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|   </el-form-item>
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| </el-form>
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| <script>
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|   export default {
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|     data() {
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|       return {
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|         ruleForm: {
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|           name: '',
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|           region: '',
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|           date1: '',
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|           date2: '',
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|           delivery: false,
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|           type: [],
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|           resource: '',
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|           desc: ''
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|         },
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|         rules: {
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|           name: [
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|             { required: true, message: '请输入活动名称', trigger: 'blur' },
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|             { min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur' }
 | ||
|           ],
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|           region: [
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|             { required: true, message: '请选择活动区域', trigger: 'change' }
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|           ],
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|           date1: [
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|             { type: 'date', required: true, message: '请选择日期', trigger: 'change' }
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|           ],
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|           date2: [
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|             { type: 'date', required: true, message: '请选择时间', trigger: 'change' }
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|           ],
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|           type: [
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|             { type: 'array', required: true, message: '请至少选择一个活动性质', trigger: 'change' }
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|           ],
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|           resource: [
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|             { required: true, message: '请选择活动资源', trigger: 'change' }
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|           ],
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|           desc: [
 | ||
|             { required: true, message: '请填写活动形式', trigger: 'blur' }
 | ||
|           ]
 | ||
|         }
 | ||
|       };
 | ||
|     },
 | ||
|     methods: {
 | ||
|       submitForm(formName) {
 | ||
|         this.$refs[formName].validate((valid) => {
 | ||
|           if (valid) {
 | ||
|             alert('submit!');
 | ||
|           } else {
 | ||
|             console.log('error submit!!');
 | ||
|             return false;
 | ||
|           }
 | ||
|         });
 | ||
|       },
 | ||
|       resetForm(formName) {
 | ||
|         this.$refs[formName].resetFields();
 | ||
|       }
 | ||
|     }
 | ||
|   }
 | ||
| </script>
 | ||
| ```
 | ||
| :::
 | ||
| 
 | ||
| ### 自定义校验规则
 | ||
| 
 | ||
| 这个例子中展示了如何使用自定义验证规则来完成密码的二次验证。
 | ||
| 
 | ||
| :::demo 本例还使用`status-icon`属性为输入框添加了表示校验结果的反馈图标。
 | ||
| ```html
 | ||
| <el-form :model="ruleForm2" status-icon :rules="rules2" ref="ruleForm2" label-width="100px" class="demo-ruleForm">
 | ||
|   <el-form-item label="密码" prop="pass">
 | ||
|     <el-input type="password" v-model="ruleForm2.pass" auto-complete="off"></el-input>
 | ||
|   </el-form-item>
 | ||
|   <el-form-item label="确认密码" prop="checkPass">
 | ||
|     <el-input type="password" v-model="ruleForm2.checkPass" auto-complete="off"></el-input>
 | ||
|   </el-form-item>
 | ||
|   <el-form-item label="年龄" prop="age">
 | ||
|     <el-input v-model.number="ruleForm2.age"></el-input>
 | ||
|   </el-form-item>
 | ||
|   <el-form-item>
 | ||
|     <el-button type="primary" @click="submitForm('ruleForm2')">提交</el-button>
 | ||
|     <el-button @click="resetForm('ruleForm2')">重置</el-button>
 | ||
|   </el-form-item>
 | ||
| </el-form>
 | ||
| <script>
 | ||
|   export default {
 | ||
|     data() {
 | ||
|       var checkAge = (rule, value, callback) => {
 | ||
|         if (!value) {
 | ||
|           return callback(new Error('年龄不能为空'));
 | ||
|         }
 | ||
|         setTimeout(() => {
 | ||
|           if (!Number.isInteger(value)) {
 | ||
|             callback(new Error('请输入数字值'));
 | ||
|           } else {
 | ||
|             if (value < 18) {
 | ||
|               callback(new Error('必须年满18岁'));
 | ||
|             } else {
 | ||
|               callback();
 | ||
|             }
 | ||
|           }
 | ||
|         }, 1000);
 | ||
|       };
 | ||
|       var validatePass = (rule, value, callback) => {
 | ||
|         if (value === '') {
 | ||
|           callback(new Error('请输入密码'));
 | ||
|         } else {
 | ||
|           if (this.ruleForm2.checkPass !== '') {
 | ||
|             this.$refs.ruleForm2.validateField('checkPass');
 | ||
|           }
 | ||
|           callback();
 | ||
|         }
 | ||
|       };
 | ||
|       var validatePass2 = (rule, value, callback) => {
 | ||
|         if (value === '') {
 | ||
|           callback(new Error('请再次输入密码'));
 | ||
|         } else if (value !== this.ruleForm2.pass) {
 | ||
|           callback(new Error('两次输入密码不一致!'));
 | ||
|         } else {
 | ||
|           callback();
 | ||
|         }
 | ||
|       };
 | ||
|       return {
 | ||
|         ruleForm2: {
 | ||
|           pass: '',
 | ||
|           checkPass: '',
 | ||
|           age: ''
 | ||
|         },
 | ||
|         rules2: {
 | ||
|           pass: [
 | ||
|             { validator: validatePass, trigger: 'blur' }
 | ||
|           ],
 | ||
|           checkPass: [
 | ||
|             { validator: validatePass2, trigger: 'blur' }
 | ||
|           ],
 | ||
|           age: [
 | ||
|             { validator: checkAge, trigger: 'blur' }
 | ||
|           ]
 | ||
|         }
 | ||
|       };
 | ||
|     },
 | ||
|     methods: {
 | ||
|       submitForm(formName) {
 | ||
|         this.$refs[formName].validate((valid) => {
 | ||
|           if (valid) {
 | ||
|             alert('submit!');
 | ||
|           } else {
 | ||
|             console.log('error submit!!');
 | ||
|             return false;
 | ||
|           }
 | ||
|         });
 | ||
|       },
 | ||
|       resetForm(formName) {
 | ||
|         this.$refs[formName].resetFields();
 | ||
|       }
 | ||
|     }
 | ||
|   }
 | ||
| </script>
 | ||
| ```
 | ||
| :::
 | ||
| 
 | ||
| ### 动态增减表单项
 | ||
| 
 | ||
| :::demo 除了在 Form 组件上一次性传递所有的验证规则外还可以在单个的表单域上传递属性的验证规则
 | ||
| ```html
 | ||
| <el-form :model="dynamicValidateForm" ref="dynamicValidateForm" label-width="100px" class="demo-dynamic">
 | ||
|   <el-form-item
 | ||
|     prop="email"
 | ||
|     label="邮箱"
 | ||
|     :rules="[
 | ||
|       { required: true, message: '请输入邮箱地址', trigger: 'blur' },
 | ||
|       { type: 'email', message: '请输入正确的邮箱地址', trigger: ['blur', 'change'] }
 | ||
|     ]"
 | ||
|   >
 | ||
|     <el-input v-model="dynamicValidateForm.email"></el-input>
 | ||
|   </el-form-item>
 | ||
|   <el-form-item
 | ||
|     v-for="(domain, index) in dynamicValidateForm.domains"
 | ||
|     :label="'域名' + index"
 | ||
|     :key="domain.key"
 | ||
|     :prop="'domains.' + index + '.value'"
 | ||
|     :rules="{
 | ||
|       required: true, message: '域名不能为空', trigger: 'blur'
 | ||
|     }"
 | ||
|   >
 | ||
|     <el-input v-model="domain.value"></el-input><el-button @click.prevent="removeDomain(domain)">删除</el-button>
 | ||
|   </el-form-item>
 | ||
|   <el-form-item>
 | ||
|     <el-button type="primary" @click="submitForm('dynamicValidateForm')">提交</el-button>
 | ||
|     <el-button @click="addDomain">新增域名</el-button>
 | ||
|     <el-button @click="resetForm('dynamicValidateForm')">重置</el-button>
 | ||
|   </el-form-item>
 | ||
| </el-form>
 | ||
| <script>
 | ||
|   export default {
 | ||
|     data() {
 | ||
|       return {
 | ||
|         dynamicValidateForm: {
 | ||
|           domains: [{
 | ||
|             value: ''
 | ||
|           }],
 | ||
|           email: ''
 | ||
|         }
 | ||
|       };
 | ||
|     },
 | ||
|     methods: {
 | ||
|       submitForm(formName) {
 | ||
|         this.$refs[formName].validate((valid) => {
 | ||
|           if (valid) {
 | ||
|             alert('submit!');
 | ||
|           } else {
 | ||
|             console.log('error submit!!');
 | ||
|             return false;
 | ||
|           }
 | ||
|         });
 | ||
|       },
 | ||
|       resetForm(formName) {
 | ||
|         this.$refs[formName].resetFields();
 | ||
|       },
 | ||
|       removeDomain(item) {
 | ||
|         var index = this.dynamicValidateForm.domains.indexOf(item)
 | ||
|         if (index !== -1) {
 | ||
|           this.dynamicValidateForm.domains.splice(index, 1)
 | ||
|         }
 | ||
|       },
 | ||
|       addDomain() {
 | ||
|         this.dynamicValidateForm.domains.push({
 | ||
|           value: '',
 | ||
|           key: Date.now()
 | ||
|         });
 | ||
|       }
 | ||
|     }
 | ||
|   }
 | ||
| </script>
 | ||
| ```
 | ||
| :::
 | ||
| 
 | ||
| ### 数字类型验证
 | ||
| 
 | ||
| :::demo 数字类型的验证需要在 `v-model` 处加上 `.number` 的修饰符,这是 `Vue` 自身提供的用于将绑定值转化为 `number` 类型的修饰符。
 | ||
| ```html
 | ||
| <el-form :model="numberValidateForm" ref="numberValidateForm" label-width="100px" class="demo-ruleForm">
 | ||
|   <el-form-item
 | ||
|     label="年龄"
 | ||
|     prop="age"
 | ||
|     :rules="[
 | ||
|       { required: true, message: '年龄不能为空'},
 | ||
|       { type: 'number', message: '年龄必须为数字值'}
 | ||
|     ]"
 | ||
|   >
 | ||
|     <el-input type="age" v-model.number="numberValidateForm.age" auto-complete="off"></el-input>
 | ||
|   </el-form-item>
 | ||
|   <el-form-item>
 | ||
|     <el-button type="primary" @click="submitForm('numberValidateForm')">提交</el-button>
 | ||
|     <el-button @click="resetForm('numberValidateForm')">重置</el-button>
 | ||
|   </el-form-item>
 | ||
| </el-form>
 | ||
| <script>
 | ||
|   export default {
 | ||
|     data() {
 | ||
|       return {
 | ||
|         numberValidateForm: {
 | ||
|           age: ''
 | ||
|         }
 | ||
|       };
 | ||
|     },
 | ||
|     methods: {
 | ||
|       submitForm(formName) {
 | ||
|         this.$refs[formName].validate((valid) => {
 | ||
|           if (valid) {
 | ||
|             alert('submit!');
 | ||
|           } else {
 | ||
|             console.log('error submit!!');
 | ||
|             return false;
 | ||
|           }
 | ||
|         });
 | ||
|       },
 | ||
|       resetForm(formName) {
 | ||
|         this.$refs[formName].resetFields();
 | ||
|       }
 | ||
|     }
 | ||
|   }
 | ||
| </script>
 | ||
| ```
 | ||
| :::
 | ||
| 
 | ||
| :::tip
 | ||
| 嵌套在 `el-form-item` 中的 `el-form-item` 标签宽度默认为零,不会继承 `el-form` 的 `label-width`。如果需要可以为其单独设置 `label-width` 属性。
 | ||
| :::
 | ||
| 
 | ||
| ### 表单内组件尺寸控制
 | ||
| 
 | ||
| 通过设置 Form 上的 `size` 属性可以使该表单内所有可调节大小的组件继承该尺寸。Form-Item 也具有该属性。
 | ||
| 
 | ||
| :::demo 如果希望某个表单项或某个表单组件的尺寸不同于 Form 上的`size`属性,直接为这个表单项或表单组件设置自己的`size`即可。
 | ||
| ```html
 | ||
| <el-form ref="form" :model="sizeForm" label-width="80px" size="mini">
 | ||
|   <el-form-item label="活动名称">
 | ||
|     <el-input v-model="sizeForm.name"></el-input>
 | ||
|   </el-form-item>
 | ||
|   <el-form-item label="活动区域">
 | ||
|     <el-select v-model="sizeForm.region" placeholder="请选择活动区域">
 | ||
|       <el-option label="区域一" value="shanghai"></el-option>
 | ||
|       <el-option label="区域二" value="beijing"></el-option>
 | ||
|     </el-select>
 | ||
|   </el-form-item>
 | ||
|   <el-form-item label="活动时间">
 | ||
|     <el-col :span="11">
 | ||
|       <el-date-picker type="date" placeholder="选择日期" v-model="sizeForm.date1" style="width: 100%;"></el-date-picker>
 | ||
|     </el-col>
 | ||
|     <el-col class="line" :span="2">-</el-col>
 | ||
|     <el-col :span="11">
 | ||
|       <el-time-picker type="fixed-time" placeholder="选择时间" v-model="sizeForm.date2" style="width: 100%;"></el-time-picker>
 | ||
|     </el-col>
 | ||
|   </el-form-item>
 | ||
|   <el-form-item label="活动性质">
 | ||
|     <el-checkbox-group v-model="sizeForm.type">
 | ||
|       <el-checkbox-button label="美食/餐厅线上活动" name="type"></el-checkbox-button>
 | ||
|       <el-checkbox-button label="地推活动" name="type"></el-checkbox-button>
 | ||
|       <el-checkbox-button label="线下主题活动" name="type"></el-checkbox-button>
 | ||
|     </el-checkbox-group>
 | ||
|   </el-form-item>
 | ||
|   <el-form-item label="特殊资源">
 | ||
|     <el-radio-group v-model="sizeForm.resource" size="medium">
 | ||
|       <el-radio border label="线上品牌商赞助"></el-radio>
 | ||
|       <el-radio border label="线下场地免费"></el-radio>
 | ||
|     </el-radio-group>
 | ||
|   </el-form-item>
 | ||
|   <el-form-item size="large">
 | ||
|     <el-button type="primary" @click="onSubmit">立即创建</el-button>
 | ||
|     <el-button>取消</el-button>
 | ||
|   </el-form-item>
 | ||
| </el-form>
 | ||
| 
 | ||
| <script>
 | ||
|   export default {
 | ||
|     data() {
 | ||
|       return {
 | ||
|         sizeForm: {
 | ||
|           name: '',
 | ||
|           region: '',
 | ||
|           date1: '',
 | ||
|           date2: '',
 | ||
|           delivery: false,
 | ||
|           type: [],
 | ||
|           resource: '',
 | ||
|           desc: ''
 | ||
|         }
 | ||
|       };
 | ||
|     },
 | ||
|     methods: {
 | ||
|       onSubmit() {
 | ||
|         console.log('submit!');
 | ||
|       }
 | ||
|     }
 | ||
|   };
 | ||
| </script>
 | ||
| ```
 | ||
| :::
 | ||
| 
 | ||
| ### Form Attributes
 | ||
| 
 | ||
| | 参数      | 说明          | 类型      | 可选值                           | 默认值  |
 | ||
| |---------- |-------------- |---------- |--------------------------------  |-------- |
 | ||
| | model   | 表单数据对象 | object      |                  —                |  — |
 | ||
| | rules    | 表单验证规则 | object | — | — |
 | ||
| | inline    | 行内表单模式 | boolean | — | false |
 | ||
| | label-position | 表单域标签的位置 | string |  right/left/top            | right |
 | ||
| | label-width | 表单域标签的宽度,作为 Form 直接子元素的 form-item 会继承该值 | string | — | — |
 | ||
| | label-suffix | 表单域标签的后缀 | string | — | — |
 | ||
| | show-message  | 是否显示校验错误信息 | boolean | — | true |
 | ||
| | inline-message  | 是否以行内形式展示校验信息 | boolean | — | false |
 | ||
| | status-icon  | 是否在输入框中显示校验结果反馈图标 | boolean | — | false |
 | ||
| | validate-on-rule-change  | 是否在 `rules` 属性改变后立即触发一次验证 | boolean | — | true |
 | ||
| | size  | 用于控制该表单内组件的尺寸 | string | medium / small / mini | — |
 | ||
| | disabled | 是否禁用该表单内的所有组件。若设置为 true,则表单内组件上的 disabled 属性不再生效 | boolean | — | false |
 | ||
| 
 | ||
| ### Form Methods
 | ||
| 
 | ||
| | 方法名      | 说明          | 参数
 | ||
| |---------- |-------------- | --------------
 | ||
| | validate | 对整个表单进行校验的方法,参数为一个回调函数。该回调函数会在校验结束后被调用,并传入两个参数:是否校验成功和未通过校验的字段。若不传入回调函数,则会返回一个 promise | Function(callback: Function(boolean, object))
 | ||
| | validateField | 对部分表单字段进行校验的方法 | Function(prop: string, callback: Function(errorMessage: string))
 | ||
| | resetFields | 对整个表单进行重置,将所有字段值重置为初始值并移除校验结果 | -
 | ||
| | clearValidate | 移除整个表单的校验结果 | -
 | ||
| 
 | ||
| ### Form Events
 | ||
| | 事件名称 | 说明    | 回调参数  |
 | ||
| |--------- |-------- |---------- |
 | ||
| | validate | 任一表单项被校验后触发 | 被校验的表单项 prop 值,校验是否通过 |
 | ||
| 
 | ||
| ### Form-Item Attributes
 | ||
| 
 | ||
| | 参数      | 说明          | 类型      | 可选值                           | 默认值  |
 | ||
| |---------- |-------------- |---------- |--------------------------------  |-------- |
 | ||
| | prop    | 表单域 model 字段,在使用 validate、resetFields 方法的情况下,该属性是必填的 | string    | 传入 Form 组件的 `model` 中的字段 | — |
 | ||
| | label | 标签文本 | string | — | — |
 | ||
| | label-width | 表单域标签的的宽度,例如 '50px' | string |       —       | — |
 | ||
| | required | 是否必填,如不设置,则会根据校验规则自动生成 | boolean | — | false |
 | ||
| | rules    | 表单验证规则 | object | — | — |
 | ||
| | error    | 表单域验证错误信息, 设置该值会使表单验证状态变为`error`,并显示该错误信息 | string | — | — |
 | ||
| | show-message  | 是否显示校验错误信息 | boolean | — | true |
 | ||
| | inline-message  | 以行内形式展示校验信息 | boolean | — | false |
 | ||
| | size  | 用于控制该表单域下组件的尺寸 | string | medium / small / mini | - |
 | ||
| 
 | ||
| ### Form-Item Slot
 | ||
| | name | 说明 |
 | ||
| |------|--------|
 | ||
| | — | Form Item 的内容 |
 | ||
| | label | 标签文本的内容 |
 | ||
| 
 | ||
| ### Form-Item Methods
 | ||
| 
 | ||
| | 方法名      | 说明          | 参数
 | ||
| |---------- |-------------- | --------------
 | ||
| | resetField | 对该表单项进行重置,将其值重置为初始值并移除校验结果 | -
 |