微信小程序实现预览图片功能

<view class='contentbot'>    <view class='contentWa' wx:key='id' wx:for='{{wawa}}'>    <image src='{{item.img_url}}' mode='widthFix' data-src='{{item.img_url}}' bindtap='previewImage'></image>     <text class='waName'>{{item.name}}</text>    </view></view>

.contentWa {  margin-top: 20rpx;  display: flex;  flex-direction: column;  justify-content: flex-start;}.contentWa image {  margin: 0;  padding: 0;  width: 100%;}.getWa{  display: flex;  flex-direction: row;  justify-content: space-between;}.waName {  width: 100%;  height: 80rpx;  line-height: 80rpx;  font-size: 30rpx;  text-align: center;  background: #fff;  display: inline-block;}

//预览图片  previewImage: function (e) {    var current = e.target.dataset.src;    var imgList = [];    for (let i = 0; i < this.data.wawa.length; i++) {      imgList.push(this.data.wawa[i].img_url);    }    wx.previewImage({      current: current,//当前点击的图片链接      urls: imgList//图片数组    })  },