GIF
代码:
getCascaderObj = function(val, opt){
return val.map(function (value, index, array) {
for (var itm of opt) {
if (itm.value == value) { opt = itm.children; return itm; }
}
return null;
});
}
完整示例:
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<link rel="stylesheet" href="https://unpkg.com/element-ui/lib/theme-default/index.css">
<style>
</style>
</head>
<body>
<div id="app">
<el-cascader v-model="val" placeholder="试试搜索：指南" :options="options" filterable @change="handleItemChange"></el-cascader>
<div v-for="i in vals">
label:{{i.label}} - value{{i.value}}
</div>
</div>
<script src="https://unpkg.com/vue/dist/vue.js"></script>
<script src="https://unpkg.com/element-ui/lib/index.js"></script>
<script>
function getCascaderObj(val,opt) {
return val.map(function (value, index, array) {
for (var itm of opt) {
if (itm.value == value) { opt = itm.children; return itm; }
}
return null;
});
}
</script>
<script>
var app = new Vue({
el: '#app',
data: {
vals:[],
val: [],
options: [{
value: 'zhinan',
label: '指南',
children: [{
value: 'shejiyuanze',
label: '设计原则',
children: [{
value: 'yizhi',
label: '一致'
}, {
value: 'fankui',
label: '反馈'
}, {
value: 'xiaolv',
label: '效率'
}, {
value: 'kekong',
label: '可控'
}]
}, {
value: 'daohang',
label: '导航',
children: [{
value: 'cexiangdaohang',
label: '侧向导航'
}, {
value: 'dingbudaohang',
label: '顶部导航'
}]
}]
}, {
value: 'zujian',
label: '组件',
children: [{
value: 'basic',
label: 'Basic',
children: [{
value: 'layout',
label: 'Layout 布局'
}, {
value: 'color',
label: 'Color 色彩'
}, {
value: 'typography',
label: 'Typography 字体'
}, {
value: 'icon',
label: 'Icon 图标'
}, {
value: 'button',
label: 'Button 按钮'
}]
}, {
value: 'form',
label: 'Form',
children: [{
value: 'radio',
label: 'Radio 单选框'
}, {
value: 'checkbox',
label: 'Checkbox 多选框'
}, {
value: 'input',
label: 'Input 输入框'
}, {
value: 'input-number',
label: 'InputNumber 计数器'
}, {
value: 'select',
label: 'Select 选择器'
}, {
value: 'cascader',
label: 'Cascader 级联选择器'
}, {
value: 'switch',
label: 'Switch 开关'
}, {
value: 'slider',
label: 'Slider 滑块'
}, {
value: 'time-picker',
label: 'TimePicker 时间选择器'
}, {
value: 'date-picker',
label: 'DatePicker 日期选择器'
}, {
value: 'datetime-picker',
label: 'DateTimePicker 日期时间选择器'
}, {
value: 'upload',
label: 'Upload 上传'
}, {
value: 'rate',
label: 'Rate 评分'
}, {
value: 'form',
label: 'Form 表单'
}]
}, {
value: 'data',
label: 'Data',
children: [{
value: 'table',
label: 'Table 表格'
}, {
value: 'tag',
label: 'Tag 标签'
}, {
value: 'progress',
label: 'Progress 进度条'
}, {
value: 'tree',
label: 'Tree 树形控件'
}, {
value: 'pagination',
label: 'Pagination 分页'
}, {
value: 'badge',
label: 'Badge 标记'
}]
}, {
value: 'notice',
label: 'Notice',
children: [{
value: 'alert',
label: 'Alert 警告'
}, {
value: 'loading',
label: 'Loading 加载'
}, {
value: 'message',
label: 'Message 消息提示'
}, {
value: 'message-box',
label: 'MessageBox 弹框'
}, {
value: 'notification',
label: 'Notification 通知'
}]
}, {
value: 'navigation',
label: 'Navigation',
children: [{
value: 'menu',
label: 'NavMenu 导航菜单'
}, {
value: 'tabs',
label: 'Tabs 标签页'
}, {
value: 'breadcrumb',
label: 'Breadcrumb 面包屑'
}, {
value: 'dropdown',
label: 'Dropdown 下拉菜单'
}, {
value: 'steps',
label: 'Steps 步骤条'
}]
}, {
value: 'others',
label: 'Others',
children: [{
value: 'dialog',
label: 'Dialog 对话框'
}, {
value: 'tooltip',
label: 'Tooltip 文字提示'
}, {
value: 'popover',
label: 'Popover 弹出框'
}, {
value: 'card',
label: 'Card 卡片'
}, {
value: 'carousel',
label: 'Carousel 走马灯'
}, {
value: 'collapse',
label: 'Collapse 折叠面板'
}]
}]
}, {
value: 'ziyuan',
label: '资源',
children: [{
value: 'axure',
label: 'Axure Components'
}, {
value: 'sketch',
label: 'Sketch Templates'
}, {
value: 'jiaohu',
label: '组件交互文档'
}]
}]
},
methods: {
handleItemChange() {
this.vals=getCascaderObj(this.val, this.options);
}
}
})
</script>
</body>
</html>
