jquery-ui 进度条

<!DOCTYPE html>
<html>
<head>
<meta charset="utf8" />
<title>progressbar</title>
<style type="text/css">
   #divprogressbar{
    width:300px;
    height:30px;
   }
   .progress-label{
    float:left;
    margin-left:40%;
    margin-top:3px;
    
   }
</style>
<link  rel="stylesheet" href="css/jquery-ui-1.10.4.min.css"  media="screen"/>
<script type="text/javascript" src="js/jquery-1.10.2.js"></script>
<script type="text/javascript" src="js/jquery-ui-1.10.4.min.js"></script>
 
</head>
<body>
 
<div id="divprogressbar"><div class="progress-label">loading...</div></div>
 
<script type="text/javascript">
   $(function(){
 
     //  var val=0;
       $('#divprogressbar').progressbar({value:0});
       $('#divprogressbar').progressbar({
           value:0,
           change:function(){
               $(".progress-label").text($("#divprogressbar").progressbar("value")+"%");
           },
           complete:function(){
               $(".progress-label").text("Complete!");
           }
 
        });
       function progress(){
       var val= $('#divprogressbar').progressbar("value") || 0;
       $('#divprogressbar').progressbar("option","value",val+1);
       if(val<99)
       {
       setTimeout(progress,100);
       }
        
       }
 
       setTimeout(progress,1000);
       
   }
  );
</script>
</body>
</html>