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Vue Router Redirect Implementation Principle Analysis

Sep 15, 2023 pm 12:28 PM
vue router (vue router)redirectionimplementation principle

Vue Router 重定向实现原理解析

Vue Router Redirect Implementation Principle Analysis

In Vue.js, Vue Router is a commonly used routing management plug-in, which makes full use of Vue.js The componentization feature makes the management of front-end routing very convenient. Vue Router provides a redirection function, that is, when accessing a route, you can automatically jump to the specified route. This article will analyze in detail the implementation principle of Vue Router redirection and provide specific code examples.

In Vue Router, we can use the redirect field to implement redirection. By setting the value of the redirect field in the routing configuration to the path of the target route, you can automatically jump to the target route when accessing the current route. For example:

const routes = [
  {
    path: '/',
    redirect: '/home'
  }
]

In the above code, when accessing the root path '/', it will be redirected to the /home path.

So, how does Vue Router implement the redirection function? In fact, the implementation principle of redirection can be boiled down to two key points: route matching and navigation control.

First of all, route matching refers to how Vue Router determines which route needs to jump to based on the current path. Vue Router traverses the routing configuration to find routing information that matches the current path. When a matching route is found, it saves the matching route information in internal state and notifies the Vue component to update.

Secondly, navigation control refers to how Vue Router implements route jumps through internal states. Vue Router listens for URL changes. When the URL changes, it will find the corresponding routing information based on the new URL, and render the corresponding components based on the routing information.

Below, we use a specific example to understand how to implement the redirection function in Vue Router.

// 路由配置
const routes = [
  {
    path: '/',
    redirect: '/home'
  },
  {
    path: '/home',
    component: Home
  },
  {
    path: '/about',
    component: About
  }
]

// 创建路由实例
const router = new VueRouter({
  routes
})

// 创建根实例并挂载路由
new Vue({
  router
}).$mount('#app')

In the above code, we define a simple routing configuration, including the redirection of the root path '/' and '/' and '/about' The component corresponding to the path.

When creating a routing instance, we pass the routing configuration to the VueRouter constructor, thus creating a routing instance router. Then, we create the root instance and mount the routing instance to the root instance.

Finally, we add a container with id as 'app' in HTML and mount the root instance to the container. In this way, we have completed the basic configuration of Vue Router.

When we access the root path '/', it will automatically jump to the /home path and load the corresponding components.

Through the above code example, we can see that Vue Router's redirection is actually implemented through the redirect field in the routing configuration. In the route matching phase, when the route matches the root path '/', a redirect to /home will be triggered.

To sum up, the redirection implementation principle of Vue Router can be boiled down to two key points: route matching and navigation control. By setting the redirect field in the routing configuration, the redirection function can be implemented during the route matching phase. At the same time, Vue Router will implement navigation control by monitoring URL changes, thereby automatically jumping to the specified route.

I hope this article will help you understand the implementation principle of Vue Router redirection, and provide specific code examples for your reference. Of course, Vue Router has more functions and features, and interested readers can continue to learn and explore in depth.

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