---
title: Nav 导航
description:
type: 0
group: ⚙ 组件
menuName: Nav
icon:
order: 58
---
用于展示链接导航
## 基本用法
```schema: scope="body"
{
"type": "nav",
"stacked": true,
"className": "w-md",
"itemBadge": {
"mode": "ribbon",
"text": "${customText}",
"position": "top-left",
"visibleOn": "this.customText",
"level": "${customLevel}"
},
"links": [
{
"label": "Nav 1",
"to": "/docs/index",
"icon": "https://suda.cdn.bcebos.com/images%2F2021-01%2Fdiamond.svg",
"active": true
},
{
"label": "Nav 2",
"to": "/docs/api",
"customText": "HOT",
"customLevel": "danger"
},
{
"label": "Nav 3",
"to": "/docs/renderers",
"customText": "SUC",
"customLevel": "success"
},
{
"label": "外部地址",
"to": "http://www.baidu.com/",
"target": "_blank"
}
]
}
```
## 配置多层级
```schema: scope="body"
{
"type": "nav",
"stacked": true,
"className": "w-md",
"links": [
{
"label": "Nav 1",
"to": "/docs/index",
"icon": "fa fa-user",
"active": true
},
{
"label": "Nav 2",
"unfolded": true,
"children": [
{
"label": "Nav 2-1",
"children": [
{
"label": "Nav 2-1-1",
"to": "/docs/api-2-1-1"
}
]
},
{
"label": "Nav 2-2",
"to": "/docs/api-2-2"
}
]
},
{
"label": "Nav 3",
"to": "/docs/renderers"
}
]
}
```
## 横向摆放
```schema: scope="body"
{
"type": "nav",
"stacked": false,
"links": [
{
"label": "Nav 1",
"to": "/docs/index",
"icon": "fa fa-user"
},
{
"label": "Nav 2",
"to": "/docs/api"
},
{
"label": "Nav 3",
"to": "/docs/renderers"
}
]
}
```
### 响应式收纳
横向（`"stack": false`）模式下配置`overflow`，实现导航响应式收纳。
```schema: scope="body"
{
"type": "nav",
"stacked": false,
"overflow": {
"enable": true
},
"links": [
{
"label": "Nav 1",
"to": "?to=nav1",
},
{
"label": "Nav 2",
"to": "?to=nav1"
},
{
"label": "Nav 3",
"to": "?to=nav3"
},
{
"label": "Nav 4",
"to": "?to=nav4"
},
{
"label": "Nav 5",
"to": "?to=nav5"
},
{
"label": "Nav 6",
"to": "?to=nav6"
},
{
"label": "Nav 7",
"to": "?to=nav7"
},
{
"label": "Nav 8",
"to": "?to=nav8"
},
{
"label": "Nav 9",
"to": "?to=nav9"
},
{
"label": "Nav 10",
"to": "?to=nav10"
},
{
"label": "Nav 11",
"to": "?to=nav11",
"children": [
{
"label": "Nav 13",
"to": "?to=nav13"
}
]
},
{
"label": "Nav 12",
"to": "?to=nav12"
}
]
}
```
设置`maxVisibleCount`可以自定义强制展示的导航数量，不设置则自动处理。设置`overflowIndicator`自定义菜单按钮的图标。
设置`overflowLabel`自定义菜单按钮文本。
```schema: scope="body"
{
"type": "nav",
"stacked": false,
"overflow": {
"enable": true,
"overflowClassName": "nav-overflow-btn",
"overflowPopoverClassName": "nav-overflow-popover",
"overflowIndicator": "fas fa-angle-double-down",
"overflowLabel": "更多",
"maxVisibleCount": 5,
},
"links": [
{
"label": "Nav 1",
"to": "?to=nav1",
},
{
"label": "Nav 2",
"to": "?to=nav1"
},
{
"label": "Nav 3",
"to": "?to=nav3"
},
{
"label": "Nav 4",
"to": "?to=nav4"
},
{
"label": "Nav 5",
"to": "?to=nav5"
},
{
"label": "Nav 6",
"to": "?to=nav6"
},
{
"label": "Nav 7",
"to": "?to=nav7"
},
{
"label": "Nav 8 Nav 8 Nav 8 Nav 8 Nav 8",
"to": "?to=nav8"
}
]
}
```
### 导航项收纳
垂直（`"stack": true`）模式下，如果子导航项比较多，也可以给导航项设置收纳模式，配置同`overflow`，仅支持一次性展开
```schema: scope="body"
{
"type": "nav",
"stacked": true,
"expandPosition": "after",
"style": {
"width": 200
},
"links": [
{
"label": [
{
"type": "tpl",
"tpl": "Nav1"
}
],
"to": "#/"
},
{
"label": "Nav2",
"unfolded": true,
"overflow": {
"enable": true
},
"children": [
{
"label": "Nav 2-1",
"to": "#/test2"
},
{
"label": "Nav 2-2",
"to": "#/test3"
},
{
"label": "Nav 2-3",
"to": "#/test1"
},
{
"label": "Nav 2-4",
"to": "#/test4"
},
{
"label": "Nav 2-5",
"to": "#/test5"
}
]
}
]
}
```
## 动态导航
通过配置 source 来实现动态生成导航，source 可以是 api 地址或者变量，比如
```schema
{
"type": "page",
"data": {
"nav": [
{
"label": "Nav 1",
"to": "/docs/index",
"icon": "fa fa-user"
},
{
"label": "Nav 2",
"to": "/docs/api"
},
{
"label": "Nav 3",
"to": "/docs/renderers"
}
]
},
"body": {
"type": "nav",
"stacked": true,
"source": "${nav}"
}
}
```
## 懒加载
可以一次只加载部分层级，更深层次的选项可以标记为 `defer` 为 true，这样只有点开的时才会加载。
```schema: scope="body"
{
"type": "nav",
"stacked": true,
"source": "/api/options/nav?parentId=${value}"
}
```
## 更多操作
```schema: scope="body"
{
"type": "nav",
"stacked": true,
"className": "w-md",
"draggable": true,
"saveOrderApi": "/api/options/nav",
"source": "/api/options/nav?parentId=${value}",
"style": {
"width": 160
},
"itemActions": [
{
"type": "icon",
"icon": "cloud",
"visibleOn": "this.to === '?cat=1'"
},
{
"type": "dropdown-button",
"level": "link",
"icon": "fa fa-ellipsis-h",
"hideCaret": true,
"buttons": [
{
"type": "button",
"label": "编辑",
},
{
"type": "button",
"label": "删除"
}
]
}
]
}
```
## 悬浮导航
可以通过设置`mode`属性来控制导航模式，不设置默认为内联导航模式
```schema: scope="body"
{
"type": "nav",
"stacked": true,
"mode": "float",
"style": {
"width": "200px"
},
"links": [
{
"label": "Nav 1",
"to": "/docs/index",
"icon": "fa fa-user",
"active": true
},
{
"label": "Nav 2",
"unfolded": true,
"children": [
{
"label": "Nav 2-1",
"children": [
{
"label": "Nav 2-1-1",
"to": "/docs/api-2-1-1"
}
]
},
{
"label": "Nav 2-2",
"to": "/docs/api-2-2"
}
]
},
{
"label": "Nav 3",
"to": "/docs/renderers"
}
]
}
```
## 导航缩起
`collapsed`属性控制导航的展开和缩起，缩起状态下，导航内容仅展示图标或第一个文字，悬浮展开全部内容或子导航项
```schema: scope="body"
{
"type": "nav",
"stacked": true,
"collapsed": true,
"links": [
{
"label": "Nav 1",
"to": "/docs/index",
"icon": "fa fa-user"
},
{
"label": "Nav 2",
"unfolded": true,
"children": [
{
"label": "Nav 2-1",
"children": [
{
"label": "Nav 2-1-1",
"to": "/docs/api-2-1-1"
}
]
},
{
"label": "Nav 2-2",
"to": "/docs/api-2-2"
}
]
},
{
"label": "Nav 3",
"to": "/docs/renderers"
}
]
}
```
## 导航分割线
导航项`mode`属性控制导航项的展示模式，支持`divider`（分割线）和`group`（分组）两种模式，不设置默认为普通导航项
```schema: scope="body"
{
"type": "nav",
"stacked": true,
"style": {
"width": "160px"
},
"links": [
{
"label": "Nav 1",
"to": "/docs/index",
"icon": "fa fa-user"
},
{
mode: 'divider'
},
{
"label": "Nav 2",
"unfolded": true,
"children": [
{
"label": "Nav 2-1",
"children": [
{
"label": "Nav 2-1-1",
"to": "/docs/api-2-1-1"
}
]
},
{
"label": "Nav 2-2",
"to": "/docs/api-2-2"
}
]
},
{
"label": "Nav 3",
"to": "/docs/renderers",
"disabled": true,
"disabledTip": "导航项禁用"
}
]
}
```
## 导航分组
分组模式（`"mode": "group"`）的导航项展示为分组标题形式
```schema: scope="body"
{
"type": "nav",
"stacked": true,
"links": [
{
"label": "Nav 1",
"to": "/docs/index",
"icon": "fa fa-user"
},
{
"label": "Nav 2",
"unfolded": true,
"mode": "group",
"children": [
{
"label": "Nav 2-1",
"children": [
{
"label": "Nav 2-1-1",
"to": "/docs/api-2-1-1"
}
]
},
{
"label": "Nav 2-2",
"to": "/docs/api-2-2"
}
]
},
{
"label": "Nav 3",
"to": "/docs/renderers",
"mode": "group",
"children": [
{
"label": "Nav 3-1",
"to": "/docs/api-2-1"
}
]
}
]
}
```
## 默认展开层级
当前导航最大层级为 4，可通过`defaultOpenLevel`来控制默认 2 层级全部展开
```schema: scope="body"
{
"type": "nav",
"stacked": true,
"defaultOpenLevel": "2",
"links": [
{
"label": "Nav 1",
"to": "/docs/index",
"icon": "fa fa-user"
},
{
"label": "Nav 2",
"unfolded": true,
"children": [
{
"label": "Nav 2-1",
"children": [
{
"label": "Nav 2-1-1",
"to": "/docs/api-2-1-1",
"children": [
{
"label": "Nav 2-1-1-1",
"to": "/docs/api-2-1-1-1"
}
]
}
]
},
{
"label": "Nav 2-2",
"to": "/docs/api-2-2"
}
]
},
{
"label": "Nav 3",
"to": "/docs/renderers",
"children": [
{
"label": "Nav 3-1",
"to": "/docs/api-2-1"
}
]
}
]
}
```
## 自定义展开按钮
可以设置`expandIcon`为 icon 的名称字符串
```schema: scope="body"
{
"type": "nav",
"stacked": true,
"expandIcon": "close",
"links": [
{
"label": "Nav 1",
"to": "/docs/index",
"icon": "fa fa-user"
},
{
"label": "Nav 2",
"unfolded": true,
"children": [
{
"label": "Nav 2-1",
"children": [
{
"label": "Nav 2-1-1",
"to": "/docs/api-2-1-1"
}
]
},
{
"label": "Nav 2-2",
"to": "/docs/api-2-2"
}
]
},
{
"label": "Nav 3",
"to": "/docs/renderers",
"children": [
{
"label": "Nav 3-1",
"to": "/docs/api-2-1"
}
]
}
]
}
```
也可以将`expandIcon`设置为`SchemaObject`
```schema: scope="body"
{
"type": "nav",
"stacked": true,
"expandIcon": {
"type": "icon",
"icon": "far fa-address-book"
},
"links": [
{
"label": "Nav 1",
"to": "/docs/index",
"icon": "fa fa-user"
},
{
"label": "Nav 2",
"unfolded": true,
"children": [
{
"label": "Nav 2-1",
"children": [
{
"label": "Nav 2-1-1",
"to": "/docs/api-2-1-1"
}
]
},
{
"label": "Nav 2-2",
"to": "/docs/api-2-2"
}
]
},
{
"label": "Nav 3",
"to": "/docs/renderers",
"children": [
{
"label": "Nav 3-1",
"to": "/docs/api-2-1"
}
]
}
]
}
```
## 属性表
| 属性名 | 类型 | 默认值 | 说明 |
| --------------------------------- | ----------------------------------------- | ------------------ | ---------------------------------------------------------------------------------------- |
| type | `string` | `"nav"` | 指定为 Nav 渲染器 |
| mode | `string` | `"inline"` | 导航模式，悬浮或者内联，默认内联模式 |
| collapsed | `boolean` | | 控制导航是否缩起 |
| indentSize | `number` | `16` | 层级缩进值，仅内联模式下生效 |
| level | `number` | | 控制导航最大展示层级数 |
| defaultOpenLevel | `number` | | 控制导航最大默认展开层级 |
| className | `string` | | 外层 Dom 的类名 |
| popupClassName | `string` | | 当为悬浮模式时，可自定义悬浮层样式 |
| expandIcon | `string \| SchemaObject` | | 自定义展开按钮 |
| expandPosition | `string` | | 展开按钮位置，`"before"`或者`"after"`，不设置默认在前面 |
| stacked | `boolean` | `true` | 设置成 false 可以以 tabs 的形式展示 |
| accordion | `boolean` | | 是否开启手风琴模式 |
| source | `string` 或 [API](../../docs/types/api) | | 可以通过变量或 API 接口动态创建导航 |
| deferApi | [API](../../docs/types/api) | | 用来延时加载选项详情的接口，可以不配置，不配置公用 source 接口。 |
| itemActions | [SchemaNode](../../docs/types/schemanode) | | 更多操作相关配置 |
| draggable | `boolean` | | 是否支持拖拽排序 |
| dragOnSameLevel | `boolean` | | 仅允许同层级内拖拽 |
| saveOrderApi | `string` 或 [API](../../docs/types/api) | | 保存排序的 api |
| itemBadge | [BadgeSchema](../../components/badge) | | 角标 |
| links | `Array` | | 链接集合 |
| links[x].label | `string` | | 名称 |
| links[x].to | [模板](../../docs/concepts/template) | | 链接地址 |
| links[x].target | `string` | 链接关系 | |
| links[x].icon | `string` | | 图标 |
| links[x].children | `Array` | | 子链接 |
| links[x].unfolded | `boolean` | | 初始是否展开 |
| links[x].active | `boolean` | | 是否高亮 |
| links[x].activeOn | [表达式](../../docs/concepts/expression) | | 是否高亮的条件，留空将自动分析链接地址 |
| links[x].defer | `boolean` | | 标记是否为懒加载项 |
| links[x].deferApi | [API](../../docs/types/api) | | 可以不配置，如果配置优先级更高 |
| links[x].disabled | `boolean` | | 是否禁用 |
| links[x].disabledTip | `string` | | 禁用提示信息 |
| links[x].className | `string` | | 菜单项自定义样式 |
| links[x].mode | `string` | | 菜菜单项模式，分组模式：`"group"`、分割线：`"divider"` |
| links[x].overflow | `NavOverflow` | | 导航项响应式收纳配置 |
| overflow | `NavOverflow` | | 响应式收纳配置 |
| overflow.enable | `boolean` | `false` | 是否开启响应式收纳 |
| overflow.overflowLabel | `string \| SchemaObject` | | 菜单触发按钮的文字 |
| overflow.overflowIndicator | `SchemaIcon` | `"fa fa-ellipsis"` | 菜单触发按钮的图标 |
| overflow.maxVisibleCount | `number` | | 开启响应式收纳后导航最大可显示数量，超出此数量的导航将被收纳到下拉菜单中，默认为自动计算 |
| overflow.wrapperComponent | `string` | | 包裹导航的外层标签名，可以使用其他标签渲染 |
| overflow.style | `React.CSSProperties` | | 自定义样式 |
| overflow.overflowClassName | `string` | `""` | 菜单按钮 CSS 类名 |
| overflow.overflowPopoverClassName | `string` | `""` | Popover 浮层 CSS 类名 |
## 事件表
当前组件会对外派发以下事件，可以通过`onEvent`来监听这些事件，并通过`actions`来配置执行的动作，在`actions`中可以通过`${事件参数名}`或`${event.data.[事件参数名]}`来获取事件产生的数据，详细查看[事件动作](../../docs/concepts/event-action)。
| 事件名称 | 事件参数 | 说明 |
| --------- | --------------------------------------------------------------- | ------------------------ |
| loaded | `items: item[]` 数据源
`item?: object` 懒加载时所点击导航项 | 异步加载数据源完成时触发 |
| collapsed | `collapsed: boolean` 缩起展开状态 | 导航缩起展开时触发 |
| toggled | `item: object` 导航项数据
`open: boolean` 展开状态 | 点击导航展开按钮时触发 |
| change | `value: item[]` 选中导航项数据 | 导航项选中有变化时触发 |
| click | `item: object` 点击导航项数据 | 手动点击导航项时触发 |
### loaded
数据源加载完成，可以尝试将`source`配置为 api 地址或者开启懒加载。
```schema
{
"type": "page",
"body": {
"type": "nav",
"stacked": true,
"source": "/api/options/nav?parentId=${value}",
"onEvent": {
"loaded": {
"actions": [
{
"actionType": "toast",
"args": {
"msg": "已加载${event.data.items.length}条记录"
}
}
]
}
}
}
}
```
### collapsed
导航缩起，可以尝试修改导航的`collapsed`属性。
```schema: scope="body"
{
"type": "nav",
"stacked": true,
"collapsed": true,
"links": [
{
"label": "Nav 1",
"to": "/docs/index",
"icon": "fa fa-user"
},
{
"label": "Nav 2",
"unfolded": true,
"children": [
{
"label": "Nav 2-1",
"children": [
{
"label": "Nav 2-1-1",
"to": "/docs/api-2-1-1"
}
]
},
{
"label": "Nav 2-2",
"to": "/docs/api-2-2"
}
]
},
{
"label": "Nav 3",
"to": "/docs/renderers"
}
],
"onEvent": {
"collapsed": {
"actions": [
{
"actionType": "toast",
"args": {
"msg": "${event.data.collapsed ? '导航缩起' : '导航展开'}"
}
}
]
}
}
}
```
### toggled
导航项收起展开，可以尝试点击导航项展开按钮。
```schema: scope="body"
{
"type": "nav",
"stacked": true,
"links": [
{
"label": "Nav 1",
"to": "/docs/index",
"icon": "fa fa-user"
},
{
"label": "Nav 2",
"unfolded": true,
"children": [
{
"label": "Nav 2-1",
"children": [
{
"label": "Nav 2-1-1",
"to": "/docs/api-2-1-1"
}
]
},
{
"label": "Nav 2-2",
"to": "/docs/api-2-2"
}
]
},
{
"label": "Nav 3",
"to": "/docs/renderers"
}
],
"onEvent": {
"toggled": {
"actions": [
{
"actionType": "toast",
"args": {
"msg": "${event.data.item.label}${event.data.open ? '展开' : '收起'}"
}
}
]
}
}
}
```
### change
导航项选中，可以尝试手动修改任意导航项的`active`属性。
```schema: scope="body"
{
"type": "nav",
"stacked": true,
"links": [
{
"label": "Nav 1",
"to": "/docs/index",
"icon": "fa fa-user"
},
{
"label": "Nav 2",
"unfolded": true,
"children": [
{
"label": "Nav 2-1",
"children": [
{
"label": "Nav 2-1-1",
"to": "/docs/api-2-1-1"
}
]
},
{
"label": "Nav 2-2",
"to": "/docs/api-2-2"
}
]
},
{
"label": "Nav 3",
"to": "/docs/renderers"
}
],
"onEvent": {
"change": {
"actions": [
{
"actionType": "toast",
"args": {
"msg": "${event.data.value.length}项选中"
}
}
]
}
}
}
```
### click
导航项点击，可以尝试手动点击任意导航项。
```schema: scope="body"
{
"type": "nav",
"stacked": true,
"links": [
{
"label": "Nav 1",
"icon": "fa fa-user"
},
{
"label": "Nav 2",
"children": [
{
"label": "Nav 2-1",
"children": [
{
"label": "Nav 2-1-1"
}
]
},
{
"label": "Nav 2-2"
}
]
},
{
"label": "Nav 3"
}
],
"onEvent": {
"click": {
"actions": [
{
"actionType": "toast",
"args": {
"msg": "${event.data.item.label}被点击了，但不一定选中"
}
}
]
}
}
}
```
## 动作表
当前组件对外暴露以下特性动作，其他组件可以通过指定`actionType: 动作名称`、`componentId: 该组件id`来触发这些动作，动作配置可以通过`args: {动作配置项名称: xxx}`来配置具体的参数，详细请查看[事件动作](../../docs/concepts/event-action#触发其他组件的动作)。
| 动作名称 | 动作配置 | 说明 |
| ----------- | -------------------------------- | --------------------------------------------------------------------------------------- |
| updateItems | `value: string`或`value: item[]` | 更新导航数据源为指定导航项的子导航数据 |
| reset | | 重置导航数据源，和 updateItems 搭配使用，没有经过 updateItems 操作的，执行 reset 无效果 |
### updateItems / reset
```schema: scope="body"
{
"type": "page",
"data": {
"items": [
{
"label": "Nav 1",
"to": "/docs/index",
"icon": "fa fa-user"
},
{
"label": "Nav 2",
"unfolded": true,
"active": true,
"children": [
{
"label": "Nav 2-1",
"children": [
{
"label": "Nav 2-1-1",
"to": "/docs/api-2-1-1"
}
]
},
{
"label": "Nav 2-2",
"to": "/docs/api-2-2"
}
]
},
{
"label": "Nav 3",
"to": "/docs/renderers"
}
]
},
"body": {
"type": "container",
"body": [
{
"type": "action",
"label": "设置数据源",
"onEvent": {
"click": {
"actions": [
{
"actionType": "updateItems",
"args": {
"value": "Nav 2"
},
"componentId": "asideNav"
}
]
}
}
},
{
"type": "action",
"label": "重置数据源",
"className": "mx-1",
"onEvent": {
"click": {
"actions": [
{
"actionType": "reset",
"componentId": "asideNav"
}
]
}
}
},
{
"type": "container",
"body": [
{
"type": "nav",
"stacked": true,
"source": "${items}",
"id": "asideNav"
}
]
}
]
}
}
```