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组件-Element---Cascader(级联选择器)

2019-07-03 09:37 1416 查看

组件-Element—Cascader(级联选择器)

组件—级联选择器

  1. 基础用法

    <div class="block">
    <span class="demonstration">默认 click 触发子菜单</span>
    <el-cascader
    v-model="value"
    :options="options"
    @change="handleChange"></el-cascader>
    </div>
    <div class="block">
    <span class="demonstration">hover 触发子菜单</span>
    <el-cascader
    v-model="value"
    :options="options"
    :props="{ expandTrigger: 'hover' }"
    @change="handleChange"></el-cascader>
    </div>
    
    <script>
    export default {
    data() {
    return {
    value: [],
    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: {
    handleChange(value) {
    console.log(value);
    }
    }
    };
    </script>
  2. 禁用选项

    <el-cascader :options="options"></el-cascader>
    
    <script>
    export default {
    data() {
    return {
    options: [{
    value: 'zhinan',
    label: '指南',
    disabled: true,
    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'
    }]
    }]
    };
    }
    };
    </script>
  3. 可清空

    <el-cascader :options="options" clearable></el-cascader>
    
    <script>
    export default {
    data() {
    return {
    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'
    }]
    }]
    }
    }
    }
    </script>
  4. 仅显示最后一级

    <el-cascader :options="options" :show-all-levels="false"></el-cascader>
    
    <script>
    export default {
    data() {
    return {
    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'
    }]
    }]
    };
    }
    };
    </script>
  5. 多选

    <div class="block">
    <span class="demonstration">默认显示所有Tag</span>
    <el-cascader
    :options="options"
    :props="props"
    clearable></el-cascader>
    </div>
    <div class="block">
    <span class="demonstration">折叠展示Tag</span>
    <el-cascader
    :options="options"
    :props="props"
    collapse-tags
    clearable></el-cascader>
    </div>
    
    <script>
    export default {
    data() {
    return {
    props: { multiple: true },
    options: [{
    value: 1,
    label: '东南',
    children: [{
    value: 2,
    label: '上海',
    children: [
    { value: 3, label: '普陀' },
    { value: 4, label: '黄埔' },
    { value: 5, label: '徐汇' }
    ]
    }, {
    value: 7,
    label: '江苏',
    children: [
    { value: 8, label: '南京' },
    { value: 9, label: '苏州' },
    { value: 10, label: '无锡' }
    ]
    }, {
    value: 12,
    label: '浙江',
    children: [
    { value: 13, label: '杭州' },
    { value: 14, label: '宁波' },
    { value: 15, label: '嘉兴' }
    ]
    }]
    }, {
    value: 17,
    label: '西北',
    children: [{
    value: 18,
    label: '陕西',
    children: [
    { value: 19, label: '西安' },
    { value: 20, label: '延安' }
    ]
    }, {
    value: 21,
    label: '新疆维吾尔族自治区',
    children: [
    { value: 22, label: '乌鲁木齐' },
    { value: 23, label: '克拉玛依' }
    ]
    }]
    }]
    };
    }
    };
    </script>
  6. 选择任意一级选项

    <div class="block">
    <span class="demonstration">单选选择任意一级选项</span>
    <el-cascader
    :options="options"
    :props="{ checkStrictly: true }"
    clearable></el-cascader>
    </div>
    <div class="block">
    <span class="demonstration">多选选择任意一级选项</span>
    <el-cascader
    :options="options"
    :props="{ multiple: true, checkStrictly: true }"
    clearable></el-cascader>
    </div>
    
    <script>
    export default {
    data() {
    return {
    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'
    }]
    }]
    };
    }
    };
    </script>
  7. 动态加载

    <el-cascader :props="props"></el-cascader>
    
    <script>
    let id = 0;
    
    export default {
    data() {
    return {
    props: {
    lazy: true,
    lazyLoad (node, resolve) {
    const { level } = node;
    setTimeout(() => {
    const nodes = Array.from({ length: level + 1 })
    .map(item => ({
    value: ++id,
    label: `选项${id}`,
    leaf: level >= 2
    }));
    // 通过调用resolve将子节点数据返回,通知组件数据加载完成
    resolve(nodes);
    }, 1000);
    }
    }
    };
    }
    };
    </script>
  8. 可搜索

    <div class="block">
    <span class="demonstration">单选可搜索</span>
    <el-cascader
    placeholder="试试搜索:指南"
    :options="options"
    filterable></el-cascader>
    </div>
    <div class="block">
    <span class="demonstration">多选可搜索</span>
    <el-cascader
    placeholder="试试搜索:指南"
    :options="options"
    :props="{ multiple: true }"
    filterable></el-cascader>
    </div>
    
    <script>
    export default {
    data() {
    return {
    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'
    }]
    }]
    };
    }
    };
    </script>
  9. 自定义节点内容

    <el-cascader :options="options">
    <template slot-scope="{ node, data }">
    <span>{{ data.label }}</span>
    <span v-if="!node.isLeaf"> ({{ data.children.length }}) </span>
    </template>
    </el-cascader>
    
    <script>
    export default {
    data() {
    return {
    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'
    }]
    }]
    }
    }
    }
    </script>
  10. 级联面板

    <el-cascader-panel :options="options"></el-cascader-panel>
    
    <script>
    export default {
    data() {
    return {
    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'
    }]
    }]
    };
    }
    };
    </script>
  11. Cascader Attributes

  12. Cascader Events

  13. Cascader Slots

  14. CascaderPanel Attributes

  15. CascaderPanel Events

  16. CascaderPanel Slots

  17. Props

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