Element Cascader 级联选择器的如何使用示例

组件—级联选择器

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>

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>

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>

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>

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>

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>

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);
     }
    }
   };
  }
 };

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>

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>

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>

Cascader Attributes

Cascader Events

Cascader Slots

CascaderPanel Attributes

CascaderPanel Events

CascaderPanel Slots

Props

到此这篇关于Element Cascader 级联选择器的使用示例的文章就介绍到这了,更多相关Element Cascader 级联选择器内容请搜索以前的文章或继续浏览下面的相关文章希望大家以后多多支持！