Skip to main content

Two lifecycle hook functions activated and deactivated in Vue routing

 The creation and mounting of components that use the cache <keep-alive> at the beginning will be executed the same as the components that do not use the cache, but the components that use the cache will not be destroyed when switching components, and the activated function will be triggered when switching back again. , the deactivated function will be triggered when switching, and components that do not use the cache cannot use the activated function. Simply put, the activated function is a hook function after the page is activated, which is triggered as soon as the page is entered. So when we use component caching, if we want to send a request every time we switch, we need to write the request function in activated, and in created or mounted, it will only work when the component is loaded for the first time.

Here are the usage details:

<keep-alive :include="['DDD']">
          <router-view></router-view>
        </keep-alive>
//
activated() {
    console.log("hello")
  },
  deactivated() {
    console.log("OvER!!!")
  },

Labels:

Comments

Post a Comment

Popular posts from this blog

Destructuring assignment in ES6

 In the past, when we wanted to assign a value to a variable, such as an array type and an object type, to assign a value to a variable, we could only specify the value directly. It is very troublesome to write in this way, but under the ES6 syntax specification, it is allowed to directly extract the required values from arrays and objects according to a certain pattern, and directly assign variables to variables. This method is called Destructuring, which is simple to understand. That is, the left and right sides of the equal sign are equal.
Post a Comment
Read more

favicon.ico 404 Not Found Causes and Solutions

 What is favicon? It is the abbreviation of Favorites Icon. Its function is that in addition to displaying the corresponding title in the browser's favorites, icons can also be used to distinguish different websites. When I encounter this kind of error, I feel very uncomfortable. There is obviously no problem. Why is a 404 error reported? The following is the solution.
Post a Comment
Read more