标签:head return turn orm 简单的 document tar out front
简单的计时:
var t=setTimeout("alert(‘5 秒!‘)",5000)
无限计时:
var c=0 var t function timedCount() { document.getElementById(‘txt‘).value=c c=c+1 t=setTimeout("timedCount()",1000) }
实现一个暂停计时和重新开始计时的效果:
<html> <head> <script type="text/javascript"> var c=0 var t function timedCount() { document.getElementById(‘txt‘).value=c c=c+1 t=setTimeout("timedCount()",1000) } function stopCount() { c=0; //1 setTimeout("document.getElementById(‘txt‘).value=0",0) //2 /*若果上面2句不加就是一个暂停计时效果,加了就是重新计时效果*/ clearTimeout(t); } </script> </head> <body> <form> <input type="button" value="开始计时!" onClick="timedCount()"> <input type="text" id="txt"> <input type="button" value="停止计时!" onClick="stopCount()"> </form> </body> </html>
实现一个时钟:
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<10 m=checkTime(m) s=checkTime(s) document.getElementById(‘txt‘).innerHTML=h+":"+m+":"+s t=setTimeout(‘startTime()‘,500) } function checkTime(i) { if (i<10) {i="0" + i} return i }
标签:head return turn orm 简单的 document tar out front
原文地址:http://www.cnblogs.com/leomei91/p/7120284.html