微信小程序之拖拽排序（代码分享）

<!--index.wxml--><view class="container"> <view bindtap="box" class="box" > <view disable-scroll="true" wx:for="{{content}}" bindtouchmove="move" bindtouchstart="movestart" bindtouchend="moveend" data-index="{{item.id}}" data-main="{{mainx}}" class="main {{mainx == item.id? 'mainmove':'mainend'}}" style="left:{{start.x}}px; top:{{start.y}}px">{{item.content}}</view> </view></view>

//index.js//获取应用实例var app = getApp();var x,y,x1,y1,x2,y2,index,currindex,n,yy;var arr1 = [{content:11,id:1},{content:22,id:2},{content:33,id:3},{content:44,id:4},{content:55,id:5}];Page({ data: { mainx:0, content:[{content:11,id:1},{content:22,id:2},{content:33,id:3},{content:44,id:4},{content:55,id:5}], start:{x:0,y:0} }, movestart:function(e){ currindex = e.target.dataset.index;  x = e.touches[0].clientX;  y = e.touches[0].clientY;  x1 = e.currentTarget.offsetLeft;  y1 = e.currentTarget.offsetTop; }, move:function(e){ yy = e.currentTarget.offsetTop; x2 = e.touches[0].clientX-x+x1; y2 = e.touches[0].clientY-y+y1; this.setData({  mainx:currindex,  opacity:0.7,  start:{x:x2,y:y2} }) }, moveend:function(){ if(y2 != 0){  var arr = [];  for(var i=0; i<this.data.content.length; i++){  arr.push(this.data.content[i]);  }  var nx = this.data.content.length;  n=1;  for(var k=2; k<nx; k++){  if(y2>(52*(k-1)+k*2-26)){   n=k;  }  }  if(y2>(52*(nx-1)+nx*2-26)){  n = nx;  }  console.log(arr);  console.log(arr1)  arr.splice((currindex-1),1);  arr.splice((n-1),0,arr1[currindex-1]);  arr1 = [];  for(var m=0; m<this.data.content.length; m++){  console.log(arr[m]);  arr[m].id = m+1;  arr1.push(arr[m]);  }  // console.log(arr1);  this.setData({  mainx:"",  content:arr,  opacity:1  }) } }})

.container { height: 100%; display: flex; flex-direction: column; align-items: center; justify-content: space-between; padding: 200rpx 0; box-sizing: border-box;} .box{width:300px; position: relative}.main{width: 90%; height:50px; background: #eee; border: 1px solid #ccc; margin:2px auto; text-align: center; line-height: 50px;}.mainmove{position: absolute; opacity: 0.7}.maind{background: #fff; border:1px dashed #efefef;}.mainend{position: static; opacity: 1;}