Using Vue to show and hide Toggle

Li gulare 2020-11-12 23:49:46
using vue hide toggle


Background introduction

jQuery There was a toggle() Method , You can toggle the display status of an element , In use vue If not introduced jQuery How to achieve this effect ?

Use scenarios

There are three common scenarios :

1. One of the control pages dom Elements

2. Multiple control pages dom Elements

3. In the control page dom Element is returned from the server , And there are many

Technical analysis

1. It can be used to achieve this effect in 12 scenes v-if Instructions , By setting true or false To control dom Hide and show of . If you control one dom Or more dom We can do it in data The corresponding flag, Every time a click event occurs flag=!flag , To switch flag Value . Click here dom Show or hide toggle that can be done .

2. The first and second scenarios are relatively simple and can be implemented in the above way , The third scenario doesn't work in this way , Because we don't know how many will return from the server dom, So we can't define control specifically dom Of flag Variable . In this case, how to render the data returned from the server by clicking dom, To achieve hide and show effect ?

Implementation method

The third scenario can be implemented with Vue.set() Method . The specific implementation is as follows :

1. The first step is to define a data Object to receive data returned from the server

data(){
return {
listAll:{}
}
}

2. Define first toggleShow() Method :

methods: {
toggleShow(index){
let obj = this.listAll[index]; // Find the clicked dom object
obj.hide = !obj.hide; // Add to this object hide attribute
this.$set(this.listAll, index, obj); // Finish adding hide New object for property set() Into the data In the data
}
}

3. Call in label template toggleShow() Method

<div v-for="(item, index) in listAll" :key="index">
<card @click.native="toggleShow(index)">
</card>
<div v-if="item.hide ? true:false">
// Show or hide area
</div>
</div>

Sum up

There are two ways to do this

1. stay data Fixed defined in flag value , Switch according to use flag Value to achieve switching dom Show or hide

2. Use Vue.set() Method , Add temporary to the data of asynchronous request meeting hide attribute , To control the clicked dom Element hide or show

If you don't know how to render the data received from the server in real time , You can look through this article :

vue How to render the data of asynchronous request to the page in real time ?

I'm Li gulare , Four years java Development , Four years of front end products , I'm a front-end architect for today's headlines , Lifelong learner . It is said that he loves development , The buddy who loves sharing is concerned about the official account of WeChat 『 Liguulare 』

 

 

 

版权声明
本文为[Li gulare]所创,转载请带上原文链接,感谢

  1. [front end -- JavaScript] knowledge point (IV) -- memory leakage in the project (I)
  2. This mechanism in JS
  3. Vue 3.0 source code learning 1 --- rendering process of components
  4. Learning the realization of canvas and simple drawing
  5. gin里获取http请求过来的参数
  6. vue3的新特性
  7. Get the parameters from HTTP request in gin
  8. New features of vue3
  9. vue-cli 引入腾讯地图(最新 api,rocketmq原理面试
  10. Vue 学习笔记(3,免费Java高级工程师学习资源
  11. Vue 学习笔记(2,Java编程视频教程
  12. Vue cli introduces Tencent maps (the latest API, rocketmq)
  13. Vue learning notes (3, free Java senior engineer learning resources)
  14. Vue learning notes (2, Java programming video tutorial)
  15. 【Vue】—props属性
  16. 【Vue】—创建组件
  17. [Vue] - props attribute
  18. [Vue] - create component
  19. 浅谈vue响应式原理及发布订阅模式和观察者模式
  20. On Vue responsive principle, publish subscribe mode and observer mode
  21. 浅谈vue响应式原理及发布订阅模式和观察者模式
  22. On Vue responsive principle, publish subscribe mode and observer mode
  23. Xiaobai can understand it. It only takes 4 steps to solve the problem of Vue keep alive cache component
  24. Publish, subscribe and observer of design patterns
  25. Summary of common content added in ES6 + (II)
  26. No.8 Vue element admin learning (III) vuex learning and login method analysis
  27. Write a mini webpack project construction tool
  28. Shopping cart (front-end static page preparation)
  29. Introduction to the fluent platform
  30. Webpack5 cache
  31. The difference between drop-down box select option and datalist
  32. CSS review (III)
  33. Node.js学习笔记【七】
  34. Node.js learning notes [VII]
  35. Vue Router根据后台数据加载不同的组件(思考-&gt;实现-&gt;不止于实现)
  36. Vue router loads different components according to background data (thinking - & gt; Implementation - & gt; (more than implementation)
  37. 【JQuery框架,Java编程教程视频下载
  38. [jQuery framework, Java programming tutorial video download
  39. Vue Router根据后台数据加载不同的组件(思考-&gt;实现-&gt;不止于实现)
  40. Vue router loads different components according to background data (thinking - & gt; Implementation - & gt; (more than implementation)
  41. 【Vue,阿里P8大佬亲自教你
  42. 【Vue基础知识总结 5,字节跳动算法工程师面试经验
  43. [Vue, Ali P8 teaches you personally
  44. [Vue basic knowledge summary 5. Interview experience of byte beating Algorithm Engineer
  45. 【问题记录】- 谷歌浏览器 Html生成PDF
  46. [problem record] - PDF generated by Google browser HTML
  47. 【问题记录】- 谷歌浏览器 Html生成PDF
  48. [problem record] - PDF generated by Google browser HTML
  49. 【JavaScript】查漏补缺 —数组中reduce()方法
  50. [JavaScript] leak checking and defect filling - reduce() method in array
  51. 【重识 HTML (3),350道Java面试真题分享
  52. 【重识 HTML (2),Java并发编程必会的多线程你竟然还不会
  53. 【重识 HTML (1),二本Java小菜鸟4面字节跳动被秒成渣渣
  54. [re recognize HTML (3) and share 350 real Java interview questions
  55. [re recognize HTML (2). Multithreading is a must for Java Concurrent Programming. How dare you not
  56. [re recognize HTML (1), two Java rookies' 4-sided bytes beat and become slag in seconds
  57. 【重识 HTML ,nginx面试题阿里
  58. 【重识 HTML (4),ELK原来这么简单
  59. [re recognize HTML, nginx interview questions]
  60. [re recognize HTML (4). Elk is so simple