<script type="text/javascript"> function startTime() { var today=new Date() var h=today.getHours() var m=today.getMinutes() var s=today.getSeconds() //add a zero in front of numbers which<10 h=checkTime(h) m=checkTime(m) s=checkTime(s) document.getElementById('wux').innerHTML=h+":"+m+":"+s t=setTimeout('startTime()',100) } //add a zero in front of numbers which<10 function checkTime(i) { if (i<10) { i="0" + i } return i } </script> <div id="wux"> </div> [Ctrl+A 全选 注:如需引入外部Js需刷新才能执行] javascript 补零 函数集合
