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

---
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"
        }
    ]
}
```

## 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                                   |