js实现鼠标拖拽div左右滑动

本文实例为大家分享了js鼠标拖拽div左右滑动的具体代码，供大家参考，具体内容如下

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <script src="js/jquery.min.js"></script>
  <style>
    body{
      position: relative;
      margin:0;
      padding:0;
      width:100%;
      height: 1000px;
    }
    #box{
      height: 50px;
      width:200px;
      position: absolute;
      left:50%;
      top:50%;
      margin-left:-200px;
      margin-top:-200px;
      background: #CDCDCD;
    }
    #small-box{
      height: 50px;
      width:50px;
      position: absolute;
      left:0;
      top:0;
      background: #FF66CC;
      cursor:move ;
      opacity: 0.7;
    }
  </style>
</head>
<body>
  <div id="box">
    <div id="small-box"></div>
  </div>
<script>
  var box=$("#small-box");
  var body=$('body');
  var index=0;
  var x1;
  box.mousedown(function(){
    index=1;       //鼠标按下才能触发onmousemove方法
    var x=event.clientX;   //鼠标点击的坐标值，x
    var left= this.style.left;
    left=left.substr(0,left.length-2);  //去掉px
    x1=parseInt(x-left);
  });
  box.mousemove(function(){
    if(index===1){
      this.style.left=event.clientX-x1+'px';
      if(this.style.left.substr(0,this.style.left.length-2)<0){
        this.style.left=0;
      };
      if(this.style.left.substr(0,this.style.left.length-2)>150){
        this.style.left='150px';
      };
    }
  });
  box.mouseup(function(){
    index=0;
  });
  body.mouseup(function(){
    index=0;
  });
</script>
</body>
</html>

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