小程序如何实现侧滑删除功能

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页面布局

<view class='dialogue-box'>      <scroll-view scroll-y="true" >        <view class='top-list'>          <view class='standard_text1'>#</view>          <view class='standard_text2'>积分项目</view>          <view class='standard_text3'>标准分</view>          <view class='standard_text4' bindtap='AddIntegrationProject'>            <view class='standard_btn'>+</view>          </view>        </view>        <view wx:if="{{lists.length>0}}">          <view class='top-list'>            <view wx:for="{{lists}}" wx:key="{{index}}" class='main_item'>              <view bindtouchstart="touchS" bindtouchmove="touchM" bindtouchend="touchE" data-index='{{index}}'  class="inner txt">                <view class='standard_text1'>{{index+1}}</view>                <view class='standard_text2'>{{item.itemName}}</view>                <view class='standard_text3'>{{item.score}}分</view>                <view class='standard_text4'>                  <image class='standard_icon' bindtap='editStanderClick' data-item='{{item}}' src='{{BaseURL}}uploadFile/groupImages/edit-h3.png'></image>                </view>              </view>              <view data-index="{{index}}" bindtap='delectOrganizationTeamScoreStandard' data-id='{{item.ID}}' class="inner del">删除</view>            </view>          </view>        </view>        <view class='No-data' wx:else>          <image src='{{BaseURL}}uploadFile/groupImages/No-data.png'></image>          <view class='No-text'>亲！暂无您的上月积分记录！</view>        </view>      </scroll-view></view>

样式

 .standard_text1 {  height: 80rpx;  line-height: 80rpx;  float: left;  width: 60rpx;  font-size: 28rpx;  color: #3b3c42;  padding-left: 30rpx;} .standard_text2 {  line-height: 80rpx;  float: left;  width: 380rpx;  font-size: 28rpx;  color: #3b3c42;} .standard_text3 {  height: 80rpx;  line-height: 80rpx;  float: left;  width: 130rpx;  font-size: 28rpx;  color: #3b3c42;} .standard_text4 {  height: 80rpx;  line-height: 80rpx;  float: left;  width: 140rpx;  font-size: 28rpx;  color: #3b3c42;} .standard_btn {  height: 50rpx;  line-height: 50rpx;  float: left;  border: 1px solid #3891f8;  color: #3891f8;  width: 50rpx;  text-align: center;  font-size: 36rpx;  border-radius: 60px;  margin-top: 10rpx;   margin-left: 60rpx;} .standard_icon {  height: 60rpx;  width: 60rpx;  margin-top: 8rpx;  float: left;  margin-left: 55rpx;} .main_item {  float: left;  width: 100%;  background-color: #fff;  position: relative;  overflow: hidden;  height: 40px;  line-height: 40px;}.inner {  position: absolute;  top: 0;  width: 100%;  line-height: 80rpx;  height: 80rpx;  float: left;} .inner.txt {  background-color: #fff;  width: 100%;  z-index: 5;  transition: left 0.2s ease-in-out;  white-space: nowrap;  overflow: hidden;  text-overflow: ellipsis;} .inner.del {  background-color: #e64340;  width: 150rpx;  text-align: center;  z-index: 4;  right: 0;  color: #fff;} 

js

var app = getApp();Page({     data: {    currentTab: 0,    BaseURL: app.globalData.BaseURL, //图片后台    mDate: '',     delBtnWidth: 180 //删除按钮宽度单位（rpx）  },     onLoad: function(options) {    var that = this;    that.getOrganizationTeamScore(); //获取标准积分    // 获取系统宽高信息     wx.getSystemInfo({      success: function(res) {        that.setData({          winWidth: res.windowWidth,          winHeight: res.windowHeight        });      }    });    that.initEleWidth(); //侧滑删除S  },     touchS: function(e) {    if (e.touches.length == 1) {      this.setData({        //设置触摸起始点水平方向位置        startX: e.touches[0].clientX      });    }  },  touchM: function(e) {    if (e.touches.length == 1) {      //手指移动时水平方向位置      var moveX = e.touches[0].clientX;      //手指起始点位置与移动期间的差值      var disX = this.data.startX - moveX;      var delBtnWidth = this.data.delBtnWidth;      var txtStyle = "";      if (disX == 0 || disX < 0) { //如果移动距离小于等于0，文本层位置不变        txtStyle = "left:0px";      } else if (disX > 0) { //移动距离大于0，文本层left值等于手指移动距离        txtStyle = "left:-" + disX + "px";        if (disX >= delBtnWidth) {          //控制手指移动距离最大值为删除按钮的宽度          txtStyle = "left:-" + delBtnWidth + "px";        }      }      //获取手指触摸的是哪一项      var index = e.currentTarget.dataset.index      // var index = e.target.dataset.index;      var lists = this.data.lists;      lists[index].txtStyle = txtStyle;      //更新列表的状态      this.setData({        lists: lists      });    }  },   touchE: function(e) {    if (e.changedTouches.length == 1) {      //手指移动结束后水平位置      var endX = e.changedTouches[0].clientX;      //触摸开始与结束，手指移动的距离      var disX = this.data.startX - endX;      var delBtnWidth = this.data.delBtnWidth;      //如果距离小于删除按钮的1/2，不显示删除按钮      var txtStyle = disX > delBtnWidth / 2 ? "left:-" + delBtnWidth + "px" : "left:0px";      //获取手指触摸的是哪一项      var index = e.currentTarget.dataset.index      // var index = e.target.dataset.index;      var lists = this.data.lists;      lists[index].txtStyle = txtStyle;      //更新列表的状态      this.setData({        lists: lists      });    }  },   //获取元素自适应后的实际宽度  getEleWidth: function(w) {    var real = 0;    try {      var res = wx.getSystemInfoSync().windowWidth;      var scale = (750 / 2) / (w / 2); //以宽度750px设计稿做宽度的自适应      // console.log(scale);      real = Math.floor(res / scale);      return real;    } catch (e) {      return false;      // Do something when catch error    }  },   initEleWidth: function() {    var delBtnWidth = this.getEleWidth(this.data.delBtnWidth);    this.setData({      delBtnWidth: delBtnWidth    });  },   //点击删除按钮事件  delItem: function(e) {    //获取列表中要删除项的下标    var index = e.currentTarget.dataset.index    // var index = e.target.dataset.index;    var lists = this.data.lists;    //移除列表中下标为index的项    lists.splice(index, 1);    //更新列表的状态    this.setData({      lists: lists    });  },         getOrganizationTeamScore: function() {    var that = this;    wx.request({      header: {        "Content-Type": "application/x-www-fORM-urlencoded"      },      method: 'POST',      url: app.globalData.BaseURL + 'group/v1/getOrganizationTeamScore.html',      data: {        organizationTeamID: that.data.organizationTeamID,      },      success: function(res) {        wx.hideLoading();        console.log("获取积分标准", res.data)        var status = res.data.status;        var info = res.data.info        if (status.indexOf("SUCCESS") == 0) {          that.setData({            lists: info          })        } else {          wx.showToast({            title: '获取失败',            icon: 'none'          })        }      }    })  },     delectOrganizationTeamScoreStandard: function(e) {    var organizationTeamScoreStandardID = e.currentTarget.dataset.id;    var that = this;    wx.showModal({      title: '删除此条标准记录',      content: '是否删除？',      success: function(res) {        if (res.confirm) {          console.log('用户点击确定')          wx.request({            header: {              "Content-Type": "application/x-www-form-urlencoded"            },            method: 'POST',            url: app.globalData.BaseURL + 'group/v1/delectOrganizationTeamScoreStandard.do',            data: {              organizationTeamScoreStandardID: organizationTeamScoreStandardID,            },            success: function(res) {              var status = res.data.status;              var info = res.data.info              if (status.indexOf("SUCCESS") == 0) {                wx.showToast({                  title: '操作成功',                  icon: 'none'                })                that.getOrganizationTeamScore();              } else {                wx.showToast({                  title: '数据使用中，无法删除！',                  icon: 'none'                })              }            }          })        } else if (res.cancel) {          console.log('用户点击取消')        }      }    })  },     editStanderClick: function(e) {    var item = e.currentTarget.dataset.item;    wx.navigateTo({      url: '/pages/My/Groupmanagement/Leanapproach/Employeeperformance/IntegralStandard/AddIntegrationProject/AddIntegrationProject?organizationTeamID=' + this.data.organizationTeamID +        '&organizationTeamScoreStandardID=' + item.ID +        '&scoreStanderFixID=' + item.scoreStanderFixID +        '&itemName=' + item.itemName +        '&score=' + item.score +        '&unit=' + item.unit +        '&isEdit=1',    })  },   // 添加积分项目  AddIntegrationProject: function() {    wx.navigateTo({      url: '/pages/My/Groupmanagement/Leanapproach/Employeeperformance/IntegralStandard/AddIntegrationProject/AddIntegrationProject?organizationTeamID=' + this.data.organizationTeamID,      success: function(res) {},      fail: function(res) {},      complete: function(res) {},    })  },      onReady: function() {   },     onShow: function() {    var that = this;    that.getOrganizationTeamScore(); //标准制定  },     onHide: function() {   },     onUnload: function() {   },     onPullDownRefresh: function() {   },     onReachBottom: function() {   },     onShareAppMessage: function() {   }})

效果图

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