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  • 微信小程序实现运动步数排行(可删除)

    5640239-6f227eb91504cb8a.png
    图片.png

    wxml

    <!-- 向左滑动删除功能 -->
    <view class="item-box">
      <view class="items">
        <view wx:for="{{list}}"  wx:key="{{index}}"  class="item">
         
          <view bindtouchstart="touchS" bindtouchmove="touchM" bindtouchend="touchE" data-index="{{index}}" style="{{item.txtStyle}}" class="inner txt">
          <i>{{item.rank}}</i>
          <image class="item-icon" mode="widthFix" src="{{item.icon}}"></image>
           <i> {{item.name}}</i>
          <span class="item-data">
        
           <i class="rankpace"> {{item.pace}}</i>
            <!-- <span class="rankxin">{{item.xin}}</span> -->
          </span>
          
          </view>
         
          <view data-index="{{index}}" bindtap = "delItem" class="inner del">删除</view>
        </view>
      </view>
    </view>
    

    wxss

    /* pages/leftSwiperDel/index.wxss */
    view{
        box-sizing: border-box;
    }
    .item-box{
         700rpx;
        margin: 0 auto;
        padding:40rpx 0;
    }
    .items{
         100%;
    }
    .item{
        position: relative;
        border-top: 2rpx solid #eee;
        height: 120rpx;
        line-height: 120rpx;
        overflow: hidden;
         
    }
    
    
    .item:last-child{
        border-bottom: 2rpx solid #eee;
    }
    .inner{
        position: absolute;
        top:0;
    }
    .inner.txt{
        background-color: #fff;
         100%;
        z-index: 5;
        padding:0 10rpx;
        transition: left 0.2s ease-in-out;
        white-space:nowrap;
        overflow:hidden;
        text-overflow:ellipsis;
    }
    .inner.del{
        background-color: #e64340;
         180rpx;text-align: center;
        z-index: 4;
        right: 0;
        color: #fff
    }
    .item-icon{
         64rpx;
        height: 64rpx;
        vertical-align: middle;
        margin-right: 16rpx;
        margin-left:13px;
        border-radius:50%;
    
    }
    
    .item-data{
      float: right;
      margin-right:5%;}
    
    .rankpace{
      color: #fa7e04;
    }
    

    js

    // pages/leftSwiperDel/index.js
    Page({
      data: {
        delBtnWidth: 180//删除按钮宽度单位(rpx)
      },
      onLoad: function (options) {
        // 页面初始化 options为页面跳转所带来的参数
        this.initEleWidth();
        this.tempData();
      },
      onReady: function () {
        // 页面渲染完成
      },
      onShow: function () {
        // 页面显示
      },
      onHide: function () {
        // 页面隐藏
      },
      onUnload: function () {
        // 页面关闭
      },
      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.target.dataset.index;
          var list = this.data.list;
          list[index].txtStyle = txtStyle;
          //更新列表的状态
          this.setData({
            list: list
          });
        }
      },
    
      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.target.dataset.index;
          var list = this.data.list;
          list[index].txtStyle = txtStyle;
          //更新列表的状态
          this.setData({
            list: list
          });
        }
      },
      //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.target.dataset.index;
        var list = this.data.list;
        //移除列表中下标为index的项
        list.splice(index, 1);
        //更新列表的状态
        this.setData({
          list: list
        });
      },
      //测试临时数据
      tempData: function () {
        var list = [
          {
            rank: "1",
            txtStyle: "",
            icon: "/images/my.png",
            name: "李飞",
           pace: "23456",
    
           
          },
          {
            rank: "2",
            txtStyle: "",  
            icon: "/images/my.png",
            name: "张叶",
            pace: "23450",
         
          },
          {
            rank: "3",
            txtStyle: "",
            icon: "/images/my.png",
            name: "王小婷",
            pace: "22345",
         
          },
          {
            rank: "4",
            txtStyle: "",
            icon: "/images/my.png",
            name: "袁经理",
            pace: "21687",
       
          },
          {
            rank: "5",
            txtStyle: "",
            icon: "/images/my.png",
            name: "陈雅婷",
            pace: "21680",
       
          },
          {
            rank: "6",
            txtStyle: "",
            icon: "/images/my.png",
            name: "许安琪",
            pace: "20890",
         
          },
          {
            rank: "7",
            txtStyle: "",
            icon: "/images/my.png",
            name: "里俊飞",
            pace: "20741",
         
          },
          {
            rank: "8",
            txtStyle: "",
            icon: "/images/my.png",
            name: "李小俊",
            pace: "19511",
          
          },
          {
            rank: "9",
            txtStyle: "",
            icon: "/images/my.png",
            name: "陈俊飞",
            pace: "19501",
           
          },]
        
      
    
        //
        this.setData({
          list: list
        });
      }
    
    })
    

    原文作者:祈澈姑娘
    技术博客:https://www.jianshu.com/u/05f416aefbe1

    90后前端妹子,爱编程,爱运营,爱折腾。
    坚持总结工作中遇到的技术问题,坚持记录工作中所所思所见,欢迎大家加入群聊,一起探讨交流。

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  • 原文地址:https://www.cnblogs.com/wangting888/p/9701419.html
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