js 倒计时示例

<script type="text/javascript">window.onload = function(){var s = 60;mySetInterval = setInterval(function(){s--;if(s >=0){$("#ds").html("<b>" +s+ "</b>");if(s===0){window.location.href = "http://www.baidu.com";}}else{clearInterval(mySetInterval);}},1000);}