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                var Sys = {};
                var ua = navigator.userAgent.toLowerCase();
                if (window.ActiveXObject)//IE
                    Sys.ie = ua.match(/msie ([\d.]+)/)[1]
                else if (document.getBoxObjectFor)//Firefox
                    Sys.firefox = ua.match(/firefox\/([\d.]+)/)[1]
                else if (window.MessageEvent && !document.getBoxObjectFor)//Chrome
                    Sys.chrome = ua.match(/chrome\/([\d.]+)/)[1]
                else if (window.opera)//Opera
                    Sys.opera = ua.match(/opera.([\d.]+)/)[1]
                else if (window.openDatabase)//Safari
                    Sys.safari = ua.match(/version\/([\d.]+)/)[1];
                //ÒÔϽøÐвâÊÔ
                if (Sys.ie) alert('IE: ' + Sys.ie);//Sys.ieÊǰ汾ºÅ
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                     Response.Write("<script language=javascript>");
              &n ......

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var a = "hello";
var b = ",world";
var c = a.concat(b);
alert(c);
//c = "hello,world"
indexOf
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var index1 = a.indexOf ......

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setTimeout("functionname",interval)
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parseInt(string)
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cloneNode(true/false)
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function Search(){
//Èç¹ûǰһ¸ö¿Ø¼þµÄÖµ´óÓÚºóÒ»¸ö¿Ø¼þµÄÖµ(ǰÌáÊǺóÒ»¸ö¿Ø¼þ²»ÊÇ¿Õ,¿ÕµÄÇé¿öϲ»×öÈκδ¦Àí)
 if(document.forms[0].koteifrom.value > document.forms[0].koteiTo.value && document.forms[0].koteiTo.value != ""){
  alert('messageÄÚÈÝ');
  var koteifrom ......
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