<cn> #### 默认值 默认值通过数组的方式指定。 </cn> <us> #### Default value Specifies default value by an array. </us> ```tpl <template> <a-cascader :options="options" @change="onChange" :defaultValue="['zhejiang', 'hangzhou', 'xihu']" /> </template> <script> export default { data() { return { options: [ { value: 'zhejiang', label: 'Zhejiang', children: [ { value: 'hangzhou', label: 'Hangzhou', children: [ { value: 'xihu', label: 'West Lake', }, ], }, ], }, { value: 'jiangsu', label: 'Jiangsu', children: [ { value: 'nanjing', label: 'Nanjing', children: [ { value: 'zhonghuamen', label: 'Zhong Hua Men', }, ], }, ], }, ], }; }, methods: { onChange(value) { console.log(value); }, }, }; </script> ```