js： function?run(){? ????var?bar?=?document.getElementById("bar");? ????var?total?=?document.getElementById("total");? ????bar.style.width=parseInt(bar.style.width)?+?1?+?"%";?? ????total.innerHTML?=?bar.style.width;? ????if(bar.style.width?==?"100%"){?? ??????window.clearTimeout(timeout);? ??????return;? ????}? ????var?timeout=window.setTimeout("run()",100); ??} ????window.onload?=?function(){?? ???????run();? ???????????bar.style.width="0%"; ???????????run(); ????}css：.container{?? ???width:450px;?? ???border:1px?solid?#6C9C2C;?? ???height:25px;?? ?} #bar{?? ???background:#95CA0D;?? ???float:left;? ???height:100%;?? ???text-align:center;?? ???line-height:150%;? ?}html：???????<div?class="container">? ?????????????<div?id="bar"?style="width:0%;"></div>?? ?????????????</div>?? ?????????????<span?id="total"></span>