checkbox例子介绍
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<meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <meta name="GENERATOR" content="Microsoft FrontPage 4.0"> <meta name="ProgId" content="FrontPage.Editor.Document"> <title>全部选择 线程数</title> <style> BODY {FONT-SIZE: 9pt;} table {FONT-SIZE: 9pt;} </style></head>
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<input type=checkbox id=checkall onclick=check_all()><label for=checkall>全部选择</label>
线程数：<input type=text id=the_thread value=10 size=2 maxlength=2 style="height:15px; font-size:12px;padding:0px"> <br> <table border=0> <tr><td style="width:100px;over-flow:hidden"><span id=show></span></td> <td style="width:400px;"> <table id=bar style="width:90%;height:10px;border:1px black solid;display:none"><tr> <td id=bar1 bgcolor=skyblue style="width:0%"></td> <td id=bar2 style="width:100%"></td> </tr></table> </td></tr> <tr><td colspan=2><span id=result></span></td></tr> </table> <script language="JavaScript"> /* This following code are designed and writen by Windy_sk <seasonx@163.net> You can use it freely, but u must held all the copyright items! */ var total = 505; var thread_num; var pre_thread; var thread = new Array(); var completed = 0; var start_time = null;for(i=0;i<total;i++)document.write("<input type=checkbox id=cbox>");
function init_para(){
thread_num = parseInt(the_thread.value); if(isNaN(thread_num)) thread_num = 10; pre_thread = Math.floor(total/thread_num); result.innerText = ""; bar1.style.width = "0%"; bar2.style.width = "100%"; bar.style.display = ""; }function check_all(){
checkall.disabled = true; init_para(); for(var i=0;i<thread_num;i++){ thread[i]=[setInterval("thread["+i+"][1]<pre_thread?check_unit("+i+"*pre_thread + thread["+i+"][1]++):clearInterval(thread["+i+"][0])",1),0]; } thread[i]=[setInterval("thread["+i+"][1]<total%thread_num?check_unit("+i+"*pre_thread + thread["+i+"][1]++):clearInterval(thread["+i+"][0])",1),0]; }function check_unit(num){
if(completed==0)start_time=new Date; cbox[num].checked=checkall.checked; completed++; var cur_rate = Math.round(completed*100/total); show.innerText = completed + "/" + total + " : " + cur_rate + "%"; bar1.style.width = cur_rate + "%"; bar2.style.width = (100-cur_rate) + "%"; if(completed == total){ completed = 0 checkall.disabled = false; result.innerText = "("+total+"单元/"+thread_num+"线程，总共耗时："+((new Date)-start_time)+" ms)"; } } </script></body>
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