51 lines
1.3 KiB
Markdown
51 lines
1.3 KiB
Markdown
<cn>
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#### 全选
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在实现全选效果时，你可能会用到`indeterminate`属性
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</cn>
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<us>
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#### Check all
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The `indeterminate` property can help you to achieve a 'check all' effect.
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</us>
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```tpl
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<template>
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<div>
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<div :style="{ borderBottom: '1px solid #E9E9E9' }">
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<a-checkbox :indeterminate="indeterminate" @change="onCheckAllChange" :checked="checkAll">
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Check all
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</a-checkbox>
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</div>
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<br />
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<a-checkbox-group :options="plainOptions" v-model="checkedList" @change="onChange" />
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</div>
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</template>
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<script>
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const plainOptions = ['Apple', 'Pear', 'Orange'];
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const defaultCheckedList = ['Apple', 'Orange'];
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export default {
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data() {
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return {
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checkedList: defaultCheckedList,
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indeterminate: true,
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checkAll: false,
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plainOptions,
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};
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},
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methods: {
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onChange(checkedList) {
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this.indeterminate = !!checkedList.length && checkedList.length < plainOptions.length;
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this.checkAll = checkedList.length === plainOptions.length;
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},
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onCheckAllChange(e) {
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Object.assign(this, {
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checkedList: e.target.checked ? plainOptions : [],
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indeterminate: false,
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checkAll: e.target.checked,
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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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