WeChat applet implements folding and expanding article functions

This article mainly introduces the functions of folding and unfolding articles in WeChat applet. It has a certain reference value. Now I share it with you. Friends in need can refer to it.

I encountered this while working on a project recently. According to the requirement, ellipses will be displayed in the folded part of the page, and the entire content will be displayed after clicking to expand. Specific implementation code

Requirements

The folded part of the page will display an ellipsis, and click to expand to display the entire content

Problems that need to be solved

• ##The direction of the arrow changes with expansion and collapse

• When the arrow text is clicked, the displayed content changes

  
  

How to solve it?

• The change in the direction of the arrow is a click event bindtap, and the small icon is changed after clicking;

• Text The change is a matter of show or hide. When folding, there is a problem of multi-line text overflow. Five attributes (display: -webkit-box, -webkit-box-orient: vertical, -webkit-line-clamp, text-overflow , overflow)

• State and data binding control style

Specific implementation

wxml

  
    
      
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wxss

.long-dec{
  padding-left: 20rpx;
  margin-top: -87rpx;
  display: -webkit-box;/*关键属性*/
  font-size:28rpx;
  color:#cfcfd0;
  line-height: 40rpx;
  word-break: break-all;
  -webkit-box-orient: vertical;/* 关键属性 */
  -webkit-line-clamp:6;/* 关键属性 */
  overflow: hidden;/* 关键属性 */
  text-overflow:ellipsis;/* 超出内容显示省略号*/
}
.hide{
 display: -webkit-box;
}
.show{
 display: block;
}
.arrow{
 position: absolute;
 width: 40rpx;
 height: 43rpx;
 left: 50%;
 transform: translate(-50%);
}

js

Page({
 data: {
  isFold: true,
 },
showAll: function (e) {
  this.setData({
   isFold: !this.data.isFold,
  })
 }

The above is the entire content of this article. I hope it will be helpful to everyone’s study. For more related content, please pay attention to the PHP Chinese website!

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