Summary of JavaScript routing and page jump experience in front-end development

In front-end development, JavaScript routing and page jumps are an essential part. A good routing scheme and page jump implementation can bring excellent user experience and page performance. In this article, we will discuss the basic knowledge of JavaScript routing and common implementation methods of page jump, and share some experiences and conclusions gained in practice.

1. Basic knowledge of JavaScript routing

In order to better understand what JavaScript routing is, we need to first understand the difference between front-end routing and back-end routing. In traditional web development, back-end routing refers to the routing of a specific URL request that is processed by the server, while front-end routing is controlled by JavaScript code and implements the core of a single-page application.

JavaScript routing is a routing solution for single-page applications. It is mainly managed based on the browser's URL and controls switching between multiple pages through JavaScript code without sending a new request to the server. . Using JavaScript routing can easily jump between pages. At the same time, for single-page applications with a better experience, it can also improve the page loading speed.

In JavaScript routing, the choice of routing library is very important. Commonly used routing libraries include Vue-Router, React-Router and Angular-UI-Router. These routing libraries provide flexible routing configuration and monitoring, navigation and other functions, providing strong support for our routing implementation.

2. Common page jump implementation methods

1. Use HTML tags to implement page jump

The most common page jump method is through the href attribute of the a tag Make a jump. For example:

<a href="about.html">关于我们</a>

This jump method is the default behavior of the browser. When the user clicks on the link, the browser will make a request to the server according to the href attribute value in the link and load the corresponding page. However, this jump method will refresh the entire page, resulting in slow loading speed and poor experience, and is not suitable for single-page applications.

2. Use JavaScript to jump to the page

In addition to using HTML tags to jump to the page, we can also use JavaScript to jump to the page. There are two common implementation methods: modifying the window.location property and the location.replace method.

2.1 Modify the window.location attribute

Use the window.location attribute to change the URL address of the current window and realize page jump. For example:

window.location.href = 'about.html';

This method will trigger a reload of the browser and add the URL address to the browser's history. There may be some performance issues due to page reloading.

2.2 Use the location.replace method

Another common jump method is to use the location.replace method, which will replace the URL of the current page with a new URL and will not Generates a new entry in the browser's history. For example:

location.replace('about.html');

This jump method will not reload the page like the window.location.href attribute, so it will be faster when the page jumps.

3. Common routing configuration

In order to better implement JavaScript routing and single-page applications, we need to have a detailed understanding of routing configuration. The following introduces some common routing configuration methods:

1. Basic routing configuration

First, we need to define a router instance, then define the route in the router and connect it with specific components association. For example, in Vue:

const router = new VueRouter({
  routes: [
    { path: '/', component: Home },
    { path: '/about', component: About }
  ]
})

In this example, we define two routes: one is the root path '/' corresponding to the Home component, and the other is '/about' corresponding to the About component.

2. Routing events

Using routing events, we can monitor routing changes and then trigger specific events when routing changes. For example, you can use beforeEach and afterEach hooks in Vue to monitor routing changes:

// 全局路由钩子
router.beforeEach((to, from, next) => {
  console.log('路由开始跳转')
  next()
})

router.afterEach(() => {
  console.log('路由跳转结束')
})

In this example, beforeEach and afterEach serve as Vue's global routing hooks and can be applied to all routes globally when routing changes. middle.

3. Route nesting

In actual development, we usually need to complexly nest pages to meet the needs of page design. In JavaScript routing, routing nesting can be easily implemented. For example, using nested routing in Vue:

// 父级组件
const Parent = { template: '<div>父级组件<router-view></router-view></div>' }

// 子级组件
const Child = { template: '<div>子级组件</div>' }

// 路由数据
const router = new VueRouter({
  routes: [
    {
      path: '/',
      component: Parent,
      children: [
        { path: 'child', component: Child }
      ]
    }
  ]
})

In this example, we define a parent route and its child routes. When the route requests the page, Vue will load the parent first. component, and then retrieve the child component based on the tag in the parent component and load it. This nested routing method can contain multiple sub-nodes to facilitate the completion of complex page design requirements.

4. Summary

Above we introduced JavaScript routing and common page jump implementation methods, and also shared some common routing configuration solutions. The importance of Javascript routing and page jumps is self-evident, and related knowledge is essential for front-end developers. In practice, it has been found that a flexible and stable routing scheme and page jump implementation can not only improve page performance and user experience, but also greatly improve development efficiency. I hope this article is helpful to you, please leave a message for discussion.

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