小程序中实现选择预览图片同时可以实现长按删除图片的代码

<view>  <view>    <view>      <view>        <view>          <view>图片上传</view>          <view>{{files.length}} / 9</view>        </view>        <view>          <view>            <block>              <view>                <image></image>              </view>            </block>          </view>          <view>            <view></view>          </view>        </view>      </view>    </view>  </view></view>

Page({  data: {    files: []  },  chooseImage: function(e) {    var that = this;    var images = that.data.files;    wx.chooseImage({      count: 9 - images.length,      sizeType: ['original', 'compressed'],      sourceType: ['album', 'camera'],      success: function(res) {        // 返回选定照片的本地文件路径列表，tempFilePath可以作为img标签的src属性显示图片        that.setData({          files: that.data.files.concat(res.tempFilePaths)        });      }    })  },  previewImage: function(e) {    wx.previewImage({      current: e.currentTarget.id,      urls: this.data.files    })  },  deleteImage: function(e) {    var that = this;    var images = that.data.files;    var index = e.currentTarget.dataset.index; //获取当前长按图片下标    wx.showModal({      title: '系统提醒',      content: '确定要删除此图片吗？',      success: function(res) {        if (res.confirm) {          images.splice(index, 1);        } else if (res.cancel) {          return false;        }        that.setData({          files: images        });      }    })  }})