component:()=>
时间: 2023-08-06 18:06:12 浏览: 37
在Vue Router中,可以使用箭头函数来定义组件。箭头函数可以用于延迟组件的加载,以优化性能。例如:
```javascript
const router = new VueRouter({
routes: [
{
path: '/user/:userId',
name: 'user',
component: () => import('@/views/User.vue')
}
]
})
```
在上述示例中,我们使用箭头函数来延迟加载`User.vue`组件。这样,在访问`/user/:userId`路径时,该组件才会被动态加载并渲染。这种方式可以提高应用的初始加载速度,只有在需要时才加载相应的组件。
相关问题
使用require.context根据views文件夹下(多级文件夹)所有.vue文件路径实现路由自动匹配生成如下格式routes,routes: [{ path: '/', redirect: '/login' }, { path: '/home', name: 'home', component: () => import('@/views/Home.vue'), redirect: '/main', children: [{ path: '/main', name: 'main', component: () => import('@/views/Main/index.vue'), children: [{ path: '/xxx', name: 'xxx', component: () => import('@/views/Main/Xxx.vue'), }, { path: '/yyy', name: 'yyy', component: () => import('@/views/Main/Yyy.vue'), } ] }, { path: '/zz', name: 'zz', component: () => import('@/views/Zz/index.vue'), children: [{ path: '/mmm', name: 'mmm', component: () => import('@/views/Zz/Mmm.vue'), }] }, ] }, { path: '/login', name: 'login', component: () => import('@/views/Login.vue') } ]
你可以使用以下代码实现:
```js
const files = require.context('@/views', true, /\.vue$/)
const routes = []
files.keys().forEach(key => {
const name = key.match(/\/(\w+)\.vue$/)[1]
const path = key.replace(/^\.\//, '').replace(/\.vue$/, '').replace(/\/index$/, '')
const route = {
path: `/${path name: name,
component: files(key).default
}
if (path === 'Home') {
route.redirect = '/main'
route.children = [{
path: 'main',
name: 'main',
component: () => import('@/views/Main/index.vue'),
children: [{
path: 'xxx',
name: 'xxx',
component: () => import('@/views/Main/Xxx.vue')
}, {
path: 'yyy',
name: 'yyy',
component: () => import('@/views/Main/Yyy.vue')
}]
}, {
path: 'zz',
name: 'zz',
component: () => import('@/views/Zz/index.vue'),
children: [{
path: 'mmm',
name: 'mmm',
component: () => import('@/views/Zz/Mmm.vue')
}]
}]
}
routes.push(route)
})
routes.push({
path: '/',
redirect: '/login'
}, {
path: '/login',
name: 'login',
component: () => import('@/views/Login.vue')
})
export default routes
```
这里使用了 `require.context` 获取所有 `.vue` 文件,然后通过正则表达式获取文件名和路径,最后根据路径和组件生成路由对象,如果是 `Home` 组件,则添加子路由。最后还要添加默认路由和登录路由。
export const constantRoutes = [ { path: '/redirect', component: Layout, hidden: true, children: [ { path: '/redirect/:path(.*)', component: () => import('@/views/redirect') } ] }, { path: '/login', component: () => import('@/views/login'), hidden: true }}访问根路径会跳转到哪个路径
在上面的路由配置中,访问根路径时不会跳转到任何路径,因为这个路由配置中没有定义根路径的路由规则。如果用户访问根路径,会出现空白页面或者 404 错误页面。
如果你想要设置默认的页面,可以在路由配置中添加一个重定向规则,将根路径重定向到你想要的默认页面。例如:
```javascript
export const constantRoutes = [
{
path: '/',
redirect: '/dashboard',
hidden: true
},
{
path: '/dashboard',
component: Layout,
children: [
{
path: '',
component: () => import('@/views/dashboard'),
name: 'Dashboard',
meta: { title: 'Dashboard', icon: 'dashboard' }
}
]
},
{
path: '/login',
component: () => import('@/views/login'),
hidden: true
}
]
```
在上面的代码中,将根路径重定向到 `/dashboard` 路径,因此当用户访问根路径时,会自动跳转到 `/dashboard` 页面。