微信小程序自定义多选事件的实现代码

 <view class="sel-box">
   /**用wx:for来进行列表渲染**/
  <view wx:for="{{repContent}}" class="multi-selection">
   <text>{{item.message}}</text>
   /**利用数组的下标index来进行判断是哪个的事件**/
   <image src="{{selectIndex[index].sureid? hasSelect : noSelect}}" class="multi-img" data-selectIndex="{{index}}" bindtap="selectRep" />
  </view>
 </view>

Page({
 /**
  * 页面的初始数据
  */
 data: {
  noSelect: 'https://xxxxx/ic_report_nor@2x.png',
  hasSelect: 'https://xxxxx/ic_check_ele@2x.png',
  repContent: [{ message: '广告内容' }, { message: '不友善内容' }, { message: '垃圾内容' }, { message: '违法违规内容' }, { message: '其他' }],
  selectIndex: [
   { sureid: false },
   { sureid: false },
   { sureid: false },
   { sureid: false },
   { sureid: false },
  ],
 },

 /**
  * 生命周期函数--监听页面加载
  */
 onLoad: function (options) {
 
 },

 selectRep:function(e){
  let index = e.currentTarget.dataset.selectindex; //当前点击元素的自定义数据，这个很关键
  let selectIndex = this.data.selectIndex;  //取到data里的selectIndex
  selectIndex[index].sureid = !selectIndex[index].sureid;  //点击就赋相反的值
  this.setData({
   selectIndex: selectIndex  //将已改变属性的json数组更新
  })
 }
})