2021-03-05 19:10:39 +08:00
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# 路由
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像 Vue 、React 这类框架是用组件化搭建页面,路由解决的是路径到组件的匹配问题。Fes.js 基于 `Vue Router` 实现的路由,想了解更多的同学可以看看[官方文档](https://next.router.vuejs.org/)。
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## 路由配置
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在配置文件 `.fes.js`中通过 `router` 进行配置。
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```js
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export default {
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router: {
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routes: [],
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mode: 'hash'
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}
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}
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```
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### routes
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`routes` 是配置添加到路由的初始路由列表,格式为路由信息的数组。具体使用参考 [Vue Router 文档](https://next.router.vuejs.org/zh/guide/) 中关于路由配置、路由匹配相关内容。
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### mode
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创建历史记录的类型:
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2021-03-23 15:53:25 +08:00
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- **history**,对应 [createWebHistory](https://next.router.vuejs.org/zh/api/#createwebhistory)
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2021-03-05 19:10:39 +08:00
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- **hash**,对应 [createWebHashHistory](https://next.router.vuejs.org/zh/api/#createWebHashHistory)
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- **memory**,对应 [createMemoryHistory](https://next.router.vuejs.org/zh/api/#createWebHashHistory)
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2021-03-23 15:53:25 +08:00
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默认是`hash`模式。
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2021-03-05 19:10:39 +08:00
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## 约定式路由
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约定式路由也叫文件路由,就是不需要手写配置,文件系统即路由,通过目录和文件及其命名分析出路由配置。
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### 约定规范
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比如以下文件结构:
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```
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pages
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├── index.vue # 根路由页面 路径为 /
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├── *.vue # 模糊匹配 路径为 *
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├── a.vue # 路径 /a
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├── b # 文件夹b
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│ ├── index.vue # 路径 /b
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│ ├── @id.vue # 动态路由 /b/:id
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│ ├── c.vue # 路径 /b/c
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│ └── layout.vue # /b 路径下所有页面公共的布局组件
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└── layout.vue # 根路由下所有页面共用的布局组件
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```
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编译后会得到以下路由配置:
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```js
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[
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{
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"path": "/",
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"component": require('@/pages/layout').default,
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"count": 5,
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"children": [
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{
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"path": "/a",
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"component": require('@/pages/a').default,
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"name": "a",
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"meta": {},
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"count": 7
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},
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{
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"path": "/b",
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"component": require('@/pages/b/layout').default,
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"count": 7,
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"children": [
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{
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"path": "/b/c",
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"component": require('@/pages/b/c').default,
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"name": "b_c",
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"meta": {},
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"count": 14
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},
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{
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"path": "/b/:id",
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"component": require('@/pages/b/@id').default,
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"name": "b__id",
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"meta": {},
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"count": 13
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},
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{
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"path": "/b",
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"component": require('@/pages/b/index').default,
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"name": "b_index",
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"meta": {},
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"count": 7
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}
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]
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},
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{
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"path": "/",
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"component": require('@/pages/index').default,
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"name": "index",
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"meta": {},
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"count": 5
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},
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{
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"path": "/:pathMatch(.*)",
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"component": require('@/pages/*').default,
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"name": "FUZZYMATCH",
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"meta": {},
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"count": 3
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}
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]
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}
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]
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```
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**需要注意的是,满足以下任意规则的文件不会被注册为路由**:
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- 不是 `.vue` 文件
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- `components` 目录中的文件
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### 动态路由
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Fes.js 里约定以 `@` 开头的文件或文件夹映射为动态路由。
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比如:
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- `src/pages/users/@id.vue` 会成为 `/users/:id`
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- `src/pages/users/@id/settings.vue` 会成为 `/users/:id/settings`
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### 嵌套路由
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Fes.js 里约定目录下有 `layout.vue` 时会生成嵌套路由,以 `layout.vue` 为该目录的公共父组件,`layout.vue` 中必须实现 `RouterView`
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比如以下目录结构:
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```
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pages
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└── users
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├── layout.vue
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├── index.vue
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└── list.vue
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```
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会生成路由:
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```js
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[
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{
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path: '/users', component: require('@/pages/users/layout').default,
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children: [
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{ path: '/users', component: require('@/pages/users/index').default },
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{ path: '/users/list', component: require('@/pages/users/list').default },
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]
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}
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]
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```
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### 模糊匹配
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Fes.js 下约定文件名为 `*` 的路由是模糊匹配路由,可以用此特性实现 [404 路由](https://next.router.vuejs.org/zh/guide/essentials/dynamic-matching.html#%E6%8D%95%E8%8E%B7%E6%89%80%E6%9C%89%E8%B7%AF%E7%94%B1%E6%88%96-404-not-found-%E8%B7%AF%E7%94%B1)。
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比如以下目录结构:
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```
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pages
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├── index.vue # 根路由页面 路径为 /
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└── *.vue # 模糊匹配 路径为 *
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```
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会生成路由:
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```js
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[
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{
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path: '/', component: require('@/pages/index').default, count: 5
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},
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{
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path: '/:pathMatch(.*)', component: require('@/pages/**').default, count: 3
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}
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]
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```
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这样,如果访问 `/foo`,`/` 不能匹配,会 fallback 到 `*` 路由,通过 `src/pages/*.vue` 进行渲染。
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### 扩展路由元信息
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我们在定义路由时可以配置`meta`字段,用来记录一些跟路由相关的信息:
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```js
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const router = new VueRouter({
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routes: [
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{
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path: '/foo',
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component: Foo,
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children: [
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{
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path: 'bar',
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component: Bar,
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// a meta field
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meta: { requiresAuth: true }
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}
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]
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}
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]
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})
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```
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2021-03-06 16:09:22 +08:00
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在 Fes.js 里约定在 `.vue`单文件组件中的 `config`区块 为 `meta` 配置。如果 `pages/a.vue` 中有如下配置:
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2021-03-05 19:10:39 +08:00
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```vue
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<config>
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{
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"name": "store",
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"title": "vuex测试"
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}
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</config>
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```
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则编译后的路由配置为:
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```js{5-8}
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[
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{
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path: '/a',
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component: require('@/pages/a').default,
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meta: {
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"name": "store",
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"title": "vuex测试"
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}
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},
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]
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```
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### 智能路由
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可以看到,编译后路由都会有 `count` 属性,这是我们根据精准匹配优先算法原则设计出路由排名算法,对匹配到的路由打分:
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- 路由的路径每个子项得到4分
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- 子项为静态细分(`/list`)再加3分
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- 子项为动态细分(`/:orderId`)再加2分
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- 根段(`/`)再1分
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- 通配符(`*`)匹配到的减去1分
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当我们跳转路由时,如果 URL 匹配到多个路由,则选择分数最高的路由。
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## 路由跳转
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想学习更多,可以查看 [Vue Router 官方文档](https://next.router.vuejs.org/zh/guide/essentials/navigation.html#%E6%9B%BF%E6%8D%A2%E5%BD%93%E5%89%8D%E4%BD%8D%E7%BD%AE)。
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### 声明式
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```vue
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<template>
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<router-link to="/home">Home</router-link>
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</template>
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```
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### 命令式
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页面跳转 API 由 `router` 实例提供,查看 [Vue Rouer 文档](https://next.router.vuejs.org/zh/api/#router-%E6%96%B9%E6%B3%95)了解更多。
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```js
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import { useRouter } from '@fesjs/fes';
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export default {
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setup(){
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const router = useRouter();
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// 这三种形式是等价的
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router.push('/users/posva#bio')
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router.push({ path: '/users/posva', hash: '#bio' })
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router.push({ name: 'users', params: { username: 'posva' }, hash: '#bio' })
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// 只改变 hash
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router.push({ hash: '#bio' })
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// 只改变 query
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router.push({ query: { page: '2' } })
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// 只改变 param
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router.push({ params: { username: 'jolyne' } })
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// 跳转到上一个路由
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router.goBack();
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// 跳转到前一个历史记录
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router.go(1);
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// 替换历史堆栈中的记录
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router.replace('/new');
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}
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}
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```
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