Summary of Vue component implementation tips
This article mainly introduces a summary of tips for implementing Vue components in detail. The editor thinks it is quite good, so I will share it with you now and give it as a reference. Let’s follow the editor to take a look, I hope it can help everyone.
Component, as the name suggests, is to abstract a relatively independent function that will be used multiple times into a component! If we want to abstract a certain function into a component, we need to make this component a black box for others. They don't need to care about how it is implemented, they only need to call it according to the agreed interface!
I used a picture to briefly summarize the composition of components in Vue:
You can see that there are quite a lot of things included in the components, and , there are still many points not listed, and each knowledge point here can be expanded and discussed a lot. However, we are not talking about principles here, only usage.
We take a tips pop-up window as an example to comprehensively apply the knowledge points of the following components. tips pop-up window, almost all frameworks or class libraries will have a pop-up window component, because the pop-up window function is usually very common, and the module is highly decoupled!
1. Interface convention
The pop-up window we implement here can use the following knowledge points: props, event, slot, ref, etc. Here we can also see how each knowledge point is used.
/**
* modal 模态接口参数
* @param {string} modal.title 模态框标题
* @param {string} modal.text 模态框内容
* @param {boolean} modal.showbtn 是否显示按钮
* @param {string} modal.btnText 按钮文字
*/
Vue.component('tips', {
props : ['tipsOptions'],
template : '#tips',
data(){
return{
show : false
}
},
computed:{
tips : {
get() {
let tips = this.tipsOptions || {};
tips = {
title: tips.title || '提示',
text: tips.text || '',
showbtn : tips.showbtn || true,
btnText : tips.btnText || '确定'
};
// console.log(tips);
return tips;
}
}
}
})2. Implementation of modal component
tips component is relatively simple to implement and is only used for A simple pop-up layer that prompts the user.
Template:
<p class="tips" v-show="show" transition="fade">
<p class="tips-close" @click="closeTips">x</p>
<p class="tips-header">
<slot name="header">
<p class="title">{{tips.title}}</p>
</slot>
</p>
<p class="tips-body">
<slot name="body">
<p class="notice">{{tips.text}}</p>
</slot>
</p>
<p class="tips-footer">
<a href="javascript:;" rel="external nofollow" rel="external nofollow" v-if="tips.showbtn" @click="yes" >{{tips.btnText}}</a>
</p>
</p>The template structure is divided into three parts, title, content and operation area. Here you can either use props to pass strings or use slots for customization.
tips style:
.tips {
position: fixed;
left: 10px;
bottom: 10px;
z-index: 1001;
-webkit-overflow-scrolling: touch;
max-width: 690px;
width: 260px;
padding: 10px;
background: #fff;
box-shadow: 0 0 10px #888;
border-radius: 4px;
}
.tips-close{
position: absolute;
top: 0;
right: 0;
width: 20px;
height: 20px;
line-height: 20px;
text-align: center;
}
.tips-header{
text-align: center;
font-size: 25px;
}Methods within the component:
methods:{
closeTips(){
this.show = false;
},
yes : function(){
this.show = false;
this.$emit('yes', {name:'wenzi', age:36}); // 触发yes事件
},
showTips(){
var self = this;
self.show = true;
setTimeout(function(){
// self.show = false;
}, 2000)
}
}3 . Call the tips component
First we start rendering the component:
<p class="app">
<a href="javascript:;" rel="external nofollow" rel="external nofollow" @click="showtips">显示</a>
<tips :tips-options="tipsOptions" ref="dialog" @yes="yes" v-cloak >
<h3 slot="header">提示标题</h3>
<p slot="body">
<p>hello world</p>
<p>wenzi</p>
</p>
</tips>
</p>Click the display button to display tips:
var app = new Vue({
el : '.app',
data : {
tipsOptions : {
title : 'tip'
}
}
methods:{
// 监听从组件内传递出来的事件
yes(args){
// console.log( args );
alert( JSON.stringify(args) );
},
// 显示tips
showtips(){
// console.log( this.$refs );
this.$refs.dialog.showTips();
}
}
})4. Summary
In this simple tips component, we implement using props to pass parameters and $emit to outwards Pass parameters and use slots to customize content.
It should be noted that component props are one-way binding, that is, when the properties of the parent component change, the child component can receive the corresponding data changes, but in turn an error will occur. That is, the data passed by props cannot be modified in the child component to achieve the purpose of modifying the properties of the parent component. This is to prevent child components from accidentally modifying the state of the parent component.
In addition, every time the parent component is updated, all props of the child component will be updated to the latest values. This means you should not change props inside child components. If you do this, Vue will warn you in the console. If you really need to make changes in the subcomponent, you can use these two methods:
Define a local variable and initialize it with the value of prop:
props: ['initialCounter'],
data: function () {
return { counter: this.initialCounter }
}Define a calculated property, process the value of prop and return it.
props: ['size'],
computed: {
normalizedSize: function () {
return this.size.trim().toLowerCase()
}
}Of course, this is just the implementation of components in a single page. We will also implement more complex components in the future.
Related recommendations:
Summary of tips in PHP development
The above is the detailed content of Summary of Vue component implementation tips. 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
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
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
How to implement dual WeChat login on Huawei mobile phones?
Mar 24, 2024 am 11:27 AM
How to implement dual WeChat login on Huawei mobile phones? With the rise of social media, WeChat has become one of the indispensable communication tools in people's daily lives. However, many people may encounter a problem: logging into multiple WeChat accounts at the same time on the same mobile phone. For Huawei mobile phone users, it is not difficult to achieve dual WeChat login. This article will introduce how to achieve dual WeChat login on Huawei mobile phones. First of all, the EMUI system that comes with Huawei mobile phones provides a very convenient function - dual application opening. Through the application dual opening function, users can simultaneously
Use Java to write code to implement love animation
Dec 23, 2023 pm 12:09 PM
Realizing love animation effects through Java code In the field of programming, animation effects are very common and popular. Various animation effects can be achieved through Java code, one of which is the heart animation effect. This article will introduce how to use Java code to achieve this effect and give specific code examples. The key to realizing the heart animation effect is to draw the heart-shaped pattern and achieve the animation effect by changing the position and color of the heart shape. Here is the code for a simple example: importjavax.swing.
PHP Programming Guide: Methods to Implement Fibonacci Sequence
Mar 20, 2024 pm 04:54 PM
The programming language PHP is a powerful tool for web development, capable of supporting a variety of different programming logics and algorithms. Among them, implementing the Fibonacci sequence is a common and classic programming problem. In this article, we will introduce how to use the PHP programming language to implement the Fibonacci sequence, and attach specific code examples. The Fibonacci sequence is a mathematical sequence defined as follows: the first and second elements of the sequence are 1, and starting from the third element, the value of each element is equal to the sum of the previous two elements. The first few elements of the sequence
Summarize the usage of system() function in Linux system
Feb 23, 2024 pm 06:45 PM
Summary of the system() function under Linux In the Linux system, the system() function is a very commonly used function, which can be used to execute command line commands. This article will introduce the system() function in detail and provide some specific code examples. 1. Basic usage of the system() function. The declaration of the system() function is as follows: intsystem(constchar*command); where the command parameter is a character.
How to implement the WeChat clone function on Huawei mobile phones
Mar 24, 2024 pm 06:03 PM
How to implement the WeChat clone function on Huawei mobile phones With the popularity of social software and people's increasing emphasis on privacy and security, the WeChat clone function has gradually become the focus of people's attention. The WeChat clone function can help users log in to multiple WeChat accounts on the same mobile phone at the same time, making it easier to manage and use. It is not difficult to implement the WeChat clone function on Huawei mobile phones. You only need to follow the following steps. Step 1: Make sure that the mobile phone system version and WeChat version meet the requirements. First, make sure that your Huawei mobile phone system version has been updated to the latest version, as well as the WeChat App.
Development suggestions: How to use the ThinkPHP framework to implement asynchronous tasks
Nov 22, 2023 pm 12:01 PM
"Development Suggestions: How to Use the ThinkPHP Framework to Implement Asynchronous Tasks" With the rapid development of Internet technology, Web applications have increasingly higher requirements for handling a large number of concurrent requests and complex business logic. In order to improve system performance and user experience, developers often consider using asynchronous tasks to perform some time-consuming operations, such as sending emails, processing file uploads, generating reports, etc. In the field of PHP, the ThinkPHP framework, as a popular development framework, provides some convenient ways to implement asynchronous tasks.
How to implement exact division operation in Golang
Feb 20, 2024 pm 10:51 PM
Implementing exact division operations in Golang is a common need, especially in scenarios involving financial calculations or other scenarios that require high-precision calculations. Golang's built-in division operator "/" is calculated for floating point numbers, and sometimes there is a problem of precision loss. In order to solve this problem, we can use third-party libraries or custom functions to implement exact division operations. A common approach is to use the Rat type from the math/big package, which provides a representation of fractions and can be used to implement exact division operations.
Master how Golang enables game development possibilities
Mar 16, 2024 pm 12:57 PM
In today's software development field, Golang (Go language), as an efficient, concise and highly concurrency programming language, is increasingly favored by developers. Its rich standard library and efficient concurrency features make it a high-profile choice in the field of game development. This article will explore how to use Golang for game development and demonstrate its powerful possibilities through specific code examples. 1. Golang’s advantages in game development. As a statically typed language, Golang is used in building large-scale game systems.
