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

  <view class="company-detail">
    <view class="company-detail-content">
      <view class="weui-loadmore weui-loadmore_line">
        <view class="weui-loadmore__tips weui-loadmore__tips_in-line">公司介绍</view>
      </view>
      <view class="long-dec {{isFold?&#39;hide&#39;:&#39;show&#39;}}">
        <text class="first-dec">
          创业是个失败概率很大的事情，我们很高兴从2012底到现在还活着， 而且还活的很不错。 目前有赞旗下的产品有：有赞微商城、有赞收银、有赞零售、有赞美业、有赞批发、有赞买家版、有赞微小店.
        </text>
        <text class="second-dec">
          我们认为，相比较业务来说，团队才是公司的核心。有赞没有“员工”只有“小伙伴”，也没有人姓“公”名“司”，我们有一群聪明、有要性、又皮实的伙伴，这才是我们最大的资产。
        </text>
        <text class="last-dec">
          有赞的小伙伴目前已超过1000人，工程师比例占55%，我们有很浓的工程师氛围，每周都有很多的有意思的分享：有出国旅游的分享、有如何搭讪的分享、有如何装修房子的分享...技术分享更是数不胜数。 我们的工作不是很轻松，但我们的氛围很轻松，很open，公司里随处可见骑着独轮车来回跑的工程师、懒人沙发、午睡吊篮、复古电话亭等等，每个月都有节日、新人表演、拓展、派对等，对我们来说，天天都可以是节日。我们倡导简单直接的沟通方式，希望做一家通透的公司。这里并没有过多的等级划分，你可以随时提出自己的意见和任何人PK。福利方面我们全额缴纳五险一金，每月980元的有赞E卡鼓励大家一起吃喝玩乐。工程师标配MacBookPro、大屏显示器和机械键盘。办公室里常备零食、水果，休息区有电视、游戏机、桌球、乒乓球、四驱赛车、桌游随时供大家放松减压。每天晚下班的打车费报销，每年给你和你的家人提供旅游和体检等等。
        </text>
      </view>
      <image class="arrow" src=" {{isFold?&#39;../../youzan-image/down.png&#39;:&#39;../../youzan-image/up.png&#39;}}" bindtap="showAll"></image>
    </view>
  </view>

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,
  })
 }

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