Jquery实现弹性滑块滑动选择数值插件

.main {
 margin: 0 auto;
 margin-: 100px;
 width: 500px;
 font-family: 微软雅黑;
 -webkit-user-select: none;
}
.contain {
 width: 500px;
 height: 40px;
 background-color: #E8E8E8;
}
.track {
 width: 16px;
 height: 46px;
 position: absolute;
 margin: -3px 0 0 0px;
 background-color: #2dacd1;
 cursor: pointer;
}
.valueC {
 height: 40px;
 position: absolute;
 margin: 0;
 background-color: #43BFE3;
}
.value span {
 position: absolute;
 text-align: right;
 height: 40px;
 line-height: 40px;
 color: #808080;
 border-right: 1px solid #dddddd;
}
.show {
 width: 45px;
 height: 30px;
 background-color: #333;
 color: #fff;
 text-align: center;
 line-height: 30px;
 position: absolute;
 opacity: 0.9;
 margin-: -38px;
 margin-left: -15px;
}

<div class="main">
 <div class="contain">
  <div class="show">0</div>
  <div class="valueC"></div>
  <div class="value"> </div>
  <div class="track"></div>
 </div>
</div>

<script type="text/javascript" src="/js/jquery-1.8.0.min.js"></script>
<script type="text/javascript"> 
$(function(){ScrollerTrack.Init();});
var ScrollerTrack={
 BodyWidth:500,
 MaxValue:300,
 CurrentX:0,
 CurrentValue:0,
 Count:0,
 Init:function(){
 var mWidth=ScrollerTrack.BodyWidth;
 $(".contain").css("width",mWidth+"px");
 var count=ScrollerTrack.MaxValue/50;
 ScrollerTrack.Count=count;
 var itemWidth=mWidth/count;
 for(var i=0;i<count;i++){
  var span=$("<span>"+(i+1)50+"</span>");
  $(span).css("width",itemWidth+"px").css("margin-left",iitemWidth+"px");
  $(".value").append(span);
 }
 ScrollerTrack.Value();
 },
 Value:function(){
  var currentValue;
  var isMoving=false;
  ScrollerTrack.CurrentX=$(".track").offset().left;
  $(".track").mousedown(function() {
  var target=$(this).parent();
  isMoving=true;
  $("html,body").mousemove(function(event) {
   if(isMoving==false)return;
   var changeX = event.clientX - ScrollerTrack.CurrentX;
         currentValue = changeX - ScrollerTrack.CurrentX;
   if(changeX<=0){
   $(target).find(".track").css("margin-left", "0px");
   $(target).find(".valueC").css("width", "0px");
   $(target).find(".show").css("margin-left", "-15px");
   $(target).find(".show").html(0);
   ScrollerTrack.CurrentValue=0;
   }
   else if(changeX>=ScrollerTrack.BodyWidth-16){
   $(target).find(".track").css("margin-left", ScrollerTrack.BodyWidth-16+"px");
   $(target).find(".valueC").css("width",ScrollerTrack.BodyWidth-16+"px");
   $(target).find(".show").css("margin-left", ScrollerTrack.BodyWidth-31+"px");
   $(target).find(".show").html(ScrollerTrack.MaxValue);
   ScrollerTrack.CurrentValue=ScrollerTrack.MaxValue;
   }
   else{
   $(target).find(".track").css("margin-left", changeX+"px");
   $(target).find(".valueC").css("width", changeX+"px");
   $(target).find(".show").css("margin-left", changeX-15+"px");
   var v=ScrollerTrack.MaxValue((changeX+16)/ScrollerTrack.BodyWidth);
   $(target).find(".show").html(parseInt(v));
   ScrollerTrack.CurrentValue=parseInt(v);
   }
  });
  });
  $("html,body").mouseup(function() {
  isMoving=false;
  });
 }
}
</script>

<script src="jquery.js"></script> 
<link rel="stylesheet" href="jquery.range.css"> 
<script src="jquery.range.js"></script> 

<input type="hidden" class="slider-input" value="23" /> 

 
$('.single-slider').jRange({ 
  from: 0, 
  to: 100, 
  step: 1, 
  scale: [0,25,50,75,100], 
  format: '%s', 
  width: 300, 
  showLabels: true, 
  showScale: true 
});