amis/docs/zh-CN/components/nav.md

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---
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"
}
]
}
```
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"
}
]
}
```
## 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}",
"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"
}
]
}
]
}
```
## 属性表
| 属性名 | 类型 | 默认值 | 说明 |
| --------------------------------- | ----------------------------------------- | ------------------ | ---------------------------------------------------------------------------------------- |
| type | `string` | `"nav"` | 指定为 Nav 渲染器 |
| className | `string` | | 外层 Dom 的类名 |
| stacked | `boolean` | `true` | 设置成 false 可以以 tabs 的形式展示 |
| 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<link>` | | 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 |
| 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 |
| overflow.overflowListClassName | `string` | `""` | 菜单外层 CSS 类名 |