router.beforeEach((to, from, next) 中文详细解释
时间: 2024-05-24 13:10:55 浏览: 13
router.beforeEach((to, from, next)是Vue Router中的一个全局前置守卫函数,它会在路由切换前被调用。该函数接受三个参数:
1. to: 要进入的目标路由对象
2. from: 当前导航正要离开的路由对象
3. next: 一个必须被调用的函数,用于进入到下一个钩子或路由。next()表示放行,next(false)表示中断当前跳转,next('/login')表示跳转到/login页面。
该函数的主要作用是用于全局的路由守卫,可以在路由跳转前进行一些判断或操作,如判断用户是否登录,是否有权限访问该路由等。如果需要在路由跳转前进行一些全局的操作,可以在该函数中进行处理。
相关问题
router.beforeEach((to, from, next)
As an AI language model, I cannot access or modify the code you provided. However, I can explain what the code does.
`router.beforeEach` is a navigation guard in Vue Router that is executed before each navigation. It takes three arguments:
1. `to`: The target Route Object being navigated to.
2. `from`: The current Route Object where the navigation is coming from.
3. `next`: A callback function that must be called to resolve the navigation. The function has three possible calls:
- `next()`: Proceeds with the navigation to the target route.
- `next(false)`: Aborts the navigation.
- `next(path)`: Redirects the navigation to the specified path.
By using `router.beforeEach`, you can add custom logic to authenticate or validate the user, restrict access to certain routes, or modify the target route.
router.beforeeach((to, from, next)
这是Vue Router中的一个钩子函数,可以在路由切换时对路由进行拦截或修改,可以用于实现登陆拦截等功能。其中参数to表示要进入的路由,参数from表示离开的路由,参数next是一个函数,必须调用它来决定是否进入路由,或者进入哪个路由。