WeChat Mini Program implements the likes service

<!-- 
 wx:index = "index": All positions can access the index after the list loop -->
<view class="item" wx:for="{{list}}" wx:index = "index">
 <view class="left">
 <image class="avatar"></image>
 </view>
 <view class="right">
 <view class="nickname">{{item.nickName}}</view>
 <view class="content">{{item.content}}</view>
 <view class="image-list">
  <image class="image" wx:for="{{item.imageList}}"></image>
 </view>
 <view class="time-area">
  <view class="time">{{item.time}}</view>
  <view>
  <!--
   data-index="{{index}}"
   1. After setting, it is displayed in currentTarget.dataset in the callback function -->
  <image class="operation-button" src="../../images/caozuo.png" catchtap="showOperationPannel" data-index="{{index}}"></image>
  <!-- Determine whether the current index is consistent with the disk index -->
  <view class="operation-pannel" wx:if="{{showOperationPannelIndex == index}}">
   <!-- Set index and click function -->
   <view class="tab" catchtap="clickLove" data-index="{{index}}">
   <image class="image" src="../../images/love-white.png"></image>
   <text>Like</text>
   </view>
   <view class="tab">
   <image class="image" src="../../images/comment-white.png"></image>
   <text>Comments</text>
   </view>
  </view>
  </view>
  
 </view>
 <view class="love-comment">
  <!-- 
  item.loveList = repeat item.loveList
  <view class="love" wx:if="{{item.loveList.length > 0}}">
  <image class="love-icon" src="../../images/love-blue.png"></image>
  <text class="love-nickname" wx:for="{{item.loveList}}">Old Master Lanling Wang</text>
  </view>
  -->
  <view class="love" wx:if="{{item.loveList.length > 0}}">
  <image class="love-icon" src="../../images/love-blue.png"></image>
  <!-- love does not conflict with the items in the entire loop -->
  <text class="love-nickname" wx:for-items="{{item.loveList}}"
  wx:for-item = "love"
  >{{love.nickName}}</text>
  </view>
  <view class="comment" wx:if="{{item.commentList.length > 0}}">
  <view wx:for-items="{{item.commentList}}"
  wx:for-item = "comment">
   <text class="comment-nickname">{{comment.nickName}}</text>
   <text class="comment-content">{{comment.content}}</text>
  </view>
  </view>
 </view>
 </view>
</view>

// pages/circle/list.js
var that;
Page({

 /**
 * Initial data of the page */
 data: {
 userInfo:null,
 list:[],
 // The index of the current click operation panel, one panel for each circle of friends showOperationPannelIndex:-1,
 },

 /**
 * Life cycle function--listen for page loading*/
 onLoad: function (options) {
 that = this;
 for (var i = 1; i < 10; i++) {
  // Define an object to store data var circleData = {};
  circleData.nickName = "Friend-" + i;
  circleData.content = "Friends post content-" + i;
  circleData.time = "2020-05-0" + i;

  //Image list var imageList = [];
  // Like list var loveList = [];
  // Comment list var commentList = [];


  // These three arrays are assigned to circleData
  circleData.imageList = imageList;
  circleData.loveList = loveList;
  circleData.commentList = commentList;

  // Assign values ​​to 3 arrays for (var j = 1; j < i; j++) {
  //Picture path, placeholder imageList.push(j);
  // loveList, define loveData object var loveData = {};
  loveData.nickName = 'Like-' + j;
  // Add the likes array to loveList
  loveList.push(loveData);

  //Comment data var commentData = {};
  commentData.nickName = "Lanling King-" + j + "：";
  commentData.content = "Comment content-" + j;
  // Add data commentList.push(commentData);
  }

  that.data.list.push(circleData);
 }
 // Re-render that.setData({
  list: that.data.list
 })
 //Get user information wx.getStorage({
  key: 'userInfo',
  success(res){
  //Convert to object console.log("getStorage success:",JSON.parse(res.data));
  that.setData({
   userInfo:JSON.parse(res.data)
  })
  }
 })
 },
 //Control the operation panel display showOperationPannel(e){
 console.log("showOperationPannel",e);
 // Get the clicked index var index = e.currentTarget.dataset.index;
 // If it is showing, close if(that.data.showOperationPannelIndex == index){
  that.setData({
  // Index starts from 0 showOperationPannelIndex:-1
  })
 }
 else{
  that.setData({
  // Set to the index of the current click showOperationPannelIndex:index
  })
 }
 
 },
 // Like function clickLove(e){
 console.log(e);
 var index = e.currentTarget.dataset.index;
 // Get this data out var circleData = that.data.list[index];
 var loveList = circleData.loveList;
 var isHaveLove = false;
 for(var i = 0; i < loveList.length; i++){
  if(that.data.userInfo.nickName == loveList[i].nickName){
  isHaveLove = true;
  // Remove likes loveList.splice(i,1);
  break;
  }
 }

 if(!isHaveLove){
  loveList.push({nickName:that.data.userInfo.nickName});
 }
 that.setData({
  list:that.data.list,
  // Close the like and comment panel showOperationPannelIndex:-1
 })

 },
 
})