<!DOCTYPE HTML><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><title>计时器</title><script type="text/javascript">var i; function clock(){ var time=new Date(); attime= time.getHours()+":"+time.getMinutes()+":"+time.getSeconds() ; document.getElementById("clock").value = attime; } function start(){ i=setInterval("clock()",1000); } function stop(){ clearInterval(i); }</script></head><body> <form> <input type="text" id="clock" size="50" /> <input type="button" value="Stop" onclock="stop()" /> <input type="button" value="start" onclock="start()" /> </form></body></html>
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