Home Web Front-end Vue.js How to use keepalive in vue

How to use keepalive in vue

May 07, 2024 pm 12:27 PM
vue Component rendering

Keepalive in Vue is used to cache component instances to maintain their state. It can be used by wrapping Keepalive components around child components. Key benefits include: state preservation, performance optimization, and data recovery. Keepalive supports include, exclude, max, and deactivationHook attributes, and is suitable for scenarios where state needs to be maintained, performance optimized, or user input restored.

How to use keepalive in vue

Keepalive usage in Vue

What is Keepalive?

Keepalive is a component in Vue.js used to cache component instances. It allows components to maintain their state across route switches or other operations.

How to use Keepalive?

To use Keepalive in Vue.js, you need to wrap it as a parent component around the child component:

<keep-alive>
  <my-component></my-component>
</keep-alive>
Copy after login

Advantages of Keepalive

When using Keepalive, the main advantages are:

  • State saving: It can save the state of the component even after the component is destroyed and recreated.
  • Performance Optimization: It can reduce the number of component re-rendering and initialization, thereby improving performance.
  • Data recovery: It can recover the data entered by users when switching routes, providing a better user experience.

Keepalive's properties

Keepalive component supports the following properties:

  • include:Specify included in The name of the component in the cache.
  • exclude: Specifies the component name to exclude from the cache.
  • max: Specifies the maximum number of components allowed to remain in the cache.
  • deactivationHook: Hook function triggered when the component is deleted from the Keepalive.

Usage scenarios

Keepalive is useful in the following scenarios:

  • When it is necessary to maintain routing switching or other operations component status.
  • When you need to optimize component rendering performance.
  • When it is necessary to restore the data entered by the user.

The above is the detailed content of How to use keepalive in vue. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

How to use bootstrap in vue How to use bootstrap in vue Apr 07, 2025 pm 11:33 PM

Using Bootstrap in Vue.js is divided into five steps: Install Bootstrap. Import Bootstrap in main.js. Use the Bootstrap component directly in the template. Optional: Custom style. Optional: Use plug-ins.

How to add functions to buttons for vue How to add functions to buttons for vue Apr 08, 2025 am 08:51 AM

You can add a function to the Vue button by binding the button in the HTML template to a method. Define the method and write function logic in the Vue instance.

How to reference js file with vue.js How to reference js file with vue.js Apr 07, 2025 pm 11:27 PM

There are three ways to refer to JS files in Vue.js: directly specify the path using the &lt;script&gt; tag;; dynamic import using the mounted() lifecycle hook; and importing through the Vuex state management library.

How to use watch in vue How to use watch in vue Apr 07, 2025 pm 11:36 PM

The watch option in Vue.js allows developers to listen for changes in specific data. When the data changes, watch triggers a callback function to perform update views or other tasks. Its configuration options include immediate, which specifies whether to execute a callback immediately, and deep, which specifies whether to recursively listen to changes to objects or arrays.

What does vue multi-page development mean? What does vue multi-page development mean? Apr 07, 2025 pm 11:57 PM

Vue multi-page development is a way to build applications using the Vue.js framework, where the application is divided into separate pages: Code Maintenance: Splitting the application into multiple pages can make the code easier to manage and maintain. Modularity: Each page can be used as a separate module for easy reuse and replacement. Simple routing: Navigation between pages can be managed through simple routing configuration. SEO Optimization: Each page has its own URL, which helps SEO.

How to return to previous page by vue How to return to previous page by vue Apr 07, 2025 pm 11:30 PM

Vue.js has four methods to return to the previous page: $router.go(-1)$router.back() uses &lt;router-link to=&quot;/&quot; component window.history.back(), and the method selection depends on the scene.

How to use vue traversal How to use vue traversal Apr 07, 2025 pm 11:48 PM

There are three common methods for Vue.js to traverse arrays and objects: the v-for directive is used to traverse each element and render templates; the v-bind directive can be used with v-for to dynamically set attribute values ​​for each element; and the .map method can convert array elements into new arrays.

How to jump a tag to vue How to jump a tag to vue Apr 08, 2025 am 09:24 AM

The methods to implement the jump of a tag in Vue include: using the a tag in the HTML template to specify the href attribute. Use the router-link component of Vue routing. Use this.$router.push() method in JavaScript. Parameters can be passed through the query parameter and routes are configured in the router options for dynamic jumps.

See all articles