How to develop custom directives in vue
This article mainly introduces the relevant information of vue custom instruction directive. The following is an introduction to you through examples. Friends who need it can refer to it.
The following is an introduction to vue customization. Instruction directive, the specific content is as follows:
v-model, v-if, v-for, v-show), vue also allows users to register some of their own functional instructions. Sometimes you really want to operate the Dom. At this time, it is automatic It is most appropriate to define instructions.
Vue.directive('zsqfocus', { // 注册一个全局自定义指令 `v-zsqfocus`，在main.js文件里
inserted: function (el) { // 当被绑定的元素插入到 DOM 中时自动调用
el.focus() // 聚焦元素
}
})<script>
export default {
directives: { // 指令的定义
zsqfocus: {
inserted: function (el) { // 获得焦点
el.focus()
}
}
}
}
</script><template> <input v-zsqfocus /> //调用 </template>
PS: Let’s take a look at the example code of vue’s custom instruction directive. The specific code is as follows:
<template>
<p>
<input v-model="dir1" v-my-directive1="dir1"/> <input v-model="dir2" v-my-directive2="dir2"/>
</p>
</template>
<script>
export default {
data(){
return { dir1:'', dir2:''
}
},
directives:{ //直接绑定函数，作用等同于update,不做准备工作和扫尾工作
myDirective1(val){
console.log(val)
}, myDirective2:{ bind(){ //第一次绑定到元素的准备工作 }, update(val，old){ //在绑定到元素后立即以初始值第一次调用，然后每次example2变化都会调用update console.log(val) }, unbind(){ //销毁前的清理工作 } }
}
}
</script>How to implement sliding with fingers in vue
How to compile, package and view index files in vue
How to use Jade template in vue
Passing template to component in Angular
Using Async and Await functions in Node.js
Solving the problem that webpack cannot access 127.0.0.1
In webpack-dev-server Implement remote access configuration method
The above is the detailed content of How to develop custom directives in vue. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
AI Hentai Generator
Generate AI Hentai for free.
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1382
52
How do I create and publish my own JavaScript libraries?
Mar 18, 2025 pm 03:12 PM
Article discusses creating, publishing, and maintaining JavaScript libraries, focusing on planning, development, testing, documentation, and promotion strategies.
How do I optimize JavaScript code for performance in the browser?
Mar 18, 2025 pm 03:14 PM
The article discusses strategies for optimizing JavaScript performance in browsers, focusing on reducing execution time and minimizing impact on page load speed.
What should I do if I encounter garbled code printing for front-end thermal paper receipts?
Apr 04, 2025 pm 02:42 PM
Frequently Asked Questions and Solutions for Front-end Thermal Paper Ticket Printing In Front-end Development, Ticket Printing is a common requirement. However, many developers are implementing...
How do I debug JavaScript code effectively using browser developer tools?
Mar 18, 2025 pm 03:16 PM
The article discusses effective JavaScript debugging using browser developer tools, focusing on setting breakpoints, using the console, and analyzing performance.
Who gets paid more Python or JavaScript?
Apr 04, 2025 am 12:09 AM
There is no absolute salary for Python and JavaScript developers, depending on skills and industry needs. 1. Python may be paid more in data science and machine learning. 2. JavaScript has great demand in front-end and full-stack development, and its salary is also considerable. 3. Influencing factors include experience, geographical location, company size and specific skills.
How do I use source maps to debug minified JavaScript code?
Mar 18, 2025 pm 03:17 PM
The article explains how to use source maps to debug minified JavaScript by mapping it back to the original code. It discusses enabling source maps, setting breakpoints, and using tools like Chrome DevTools and Webpack.
How to merge array elements with the same ID into one object using JavaScript?
Apr 04, 2025 pm 05:09 PM
How to merge array elements with the same ID into one object in JavaScript? When processing data, we often encounter the need to have the same ID...
The difference in console.log output result: Why are the two calls different?
Apr 04, 2025 pm 05:12 PM
In-depth discussion of the root causes of the difference in console.log output. This article will analyze the differences in the output results of console.log function in a piece of code and explain the reasons behind it. �...
