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function loadscript(url) {
document.write('<scr' + 'ipt type="text/javascript" src"' + url + '"><\/scr' + 'ipt>'>)
}
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function
matchDemo(){
var s;
var re = new RegExp("d(b+)(d)","ig");
var str = "cdbBdbsbdbdz";
var arr = re.exec(str);
s = "$1
contains: " + RegExp.$1 + "\n";
s += "$2 contains: " + RegExp.$2 +
"\n";
s += "$3 contains: " + RegExp.$3;
return(s);
}
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Summary ×ܽá
When web pages or applications begin to feel slow, analyzing assets as they come over the wire and profiling scripts while they are running allows you to focus your optimization efforts where they are needed most.
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1 history.go(0)
2 location.reload() £¨Ò³Ãæ½øÐÐˢУ¬µ«ÎªdisabledµÄÔªËØµÄÖµ²»»á±»Çå¿Õ£©
3 location=location
4 location.assign(location)
5 location.replace(location)
6 from..reset() (Ò³Ãæ²»½øÐÐˢУ¬Ä£Äâµ¥»÷¶ÔËùµ÷ÓÃ±íµ¥ÖØÖð´Å¥µÄµ¥»÷)
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1.function f(x){return x*x;};f(x);
2.(function(x){return x*x;})(x);
3.(function(x){return x*x;}(x));
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" conte ......
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<input name=Button onClick=document.all.WebBrowser.ExecWB(1,1) type=button value=´ò¿ª>
<OBJECT classid=CLSID:8856F961-340A-11D0-A96B-00C04FD705A2 height=0 id=WebBrowser width=0></OBJECT>
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<input name=Button onClick=document.all.WebBrowser.ExecWB(4,1) typ ......