<view class=‘content-img‘ wx:if="{{images}}" >
    <view wx:for="{{images}}">
      <image src="{{item}}" data-src="{{item}}" bindtap="previewImage"></image>
    </view>
  </view>

  data: {
    images: [
      ‘http://pic.58pic.com/58pic/15/63/07/42Q58PIC42U_1024.jpg‘,
      ‘http://img.zcool.cn/community/01d881579dc3620000018c1b430c4b.JPG@3000w_1l_2o_100sh.jpg‘
    ],
  },

  /** 
     * 预览图片
     */
  previewImage: function (e) {
    console.log(e)
    var current = e.target.dataset.src;
    wx.previewImage({
      current: current, // 当前显示图片的http链接
      urls: this.data.images // 需要预览的图片http链接列表
    })
  } ,