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<BODY>
<SCRIPT LANGUAGE="JavaScript">
var a="<!--";
alert(a);
</SCRIPT>
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</BODY>
</HTML>
榪欐牱涓孌典唬鐮佸湪IE涓嬮潰灞呯劧璇硶瑙f瀽閿欒錛佸疄鍦ㄦ槸寮卞埌涓嶇煡閬撴庝箞璇村ソ浜嗐?br />褰撶劧錛屼笅闈㈣繖涓孌典唬鐮侊紝涔熶笉鍑烘剰澶栫殑鍦↖E涓嬫寕鎺変簡
<BODY>
<SCRIPT LANGUAGE="JavaScript">
var a="<!--";
alert(a);
</SCRIPT>
<SCRIPT LANGUAGE="JavaScript">
var a="-->";
alert(a);
</SCRIPT>
</BODY>
</HTML>
緇堜簬鏄庣櫧涓哄暐Editplus閲岄潰鎻掑叆script鏍囪鐨勬椂鍊欐繪槸甯垜鍔犱笂 <!-- 鍜?//-->浜嗭紝榪欎咯璐ц繕鐪熶笉鑳介殢渚垮幓鎺夈?br />
<BODY>
<SCRIPT LANGUAGE="JavaScript">
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var a="<!--";
alert(a);
//-->
</SCRIPT>
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</BODY>
</HTML>
榪欎釜灝辨病浜嬨?br />
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<HEAD>
<SCRIPT LANGUAGE="JavaScript">
var isIE = !!window.ActiveXObject;
var useFragment=false;
function loadjs(url,callback,errcallback,url2,url3){
if(isIE){
if(useFragment){
var df = document.createDocumentFragment();
df.visitCountCallBack = function(data){
s.onreadystatechange=null;
df=null;
callback(data);
}
var s = df.createElement("SCRIPT");
df.appendChild(s);
s.onreadystatechange=function (ec,cb,u2,u3){
return function(){
if(s.readyState=="loaded") {
s.onreadystatechange=null;
df=null;
if(!u2){
ec();
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loadjs(u2,cb,ec,u3)
}
}
}
}(errcallback,callback,url2,url3)
s.src = url;
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var i=new ActiveXObject("htmlfile");
i.open();
i.parentWindow.visitCountCallBack=function(i){
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i=null;
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}
}(errcallback,callback,url2,url3)
i.write("<script src=\""+url+"\"><\/script><script defer>setTimeout(\"errcallback()\",0)<\/script>")
if(i)i.close();//濡傛灉鏁版嵁琚玞ache錛岃繍琛屽埌榪欎竴琛岀殑鏃跺欐湁鍙兘鍥炶皟宸茬粡瀹屾垚,紿楀彛宸茬粡鍏抽棴銆?/span>
}
}else{
var i = document.createElement("IFRAME");
i.style.display="none";
i.callback=function(o){
callback(o);
i.contentWindow.callback=null;
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i.parentNode.removeChild(i);
i = null;
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i.errcallback = function(ec,cb,u2,u3){
return function(){
if(!u2){
ec();
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loadjs(u2,cb,ec,u3)
}
}
}(errcallback,callback,url2,url3);
i.src="javascript:\"<script>function visitCountCallBack(data){frameElement.callback(data)};<\/script><script src='"+url+"'><\/script><script>setTimeout('frameElement.errcallback()',0)<\/script>\"";
document.body.appendChild(i);
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function init(){
var spans = document.getElementsByTagName("span");
for(var i=0;i<spans.length;i++){
var id = spans[i].id;
var url = "http://g.qzone.qq.com/fcg-bin/cgi_emotion_list.fcg?uin=a"+id;//鏁呮剰鍒墮犻敊璇紩鍙戦噸璇?/span>
var url2 = "http://g.qzone.qq.com/fcg-bin/cgi_emotion_list.fcg?uin=b"+id;//鏁呮剰鍐嶆鍒墮犻敊璇紩鍙戦噸璇?/span>
var url3 = "http://g.qzone.qq.com/fcg-bin/cgi_emotion_list.fcg?uin="+id;
var callback = function(id){ return function(data){
document.getElementById(id).innerHTML = data.visitcount;
}
}(id);
var errcallback = function(id){ return function(){
document.getElementById(id).innerHTML = "鏃犳硶榪炴帴鍒版湇鍔″櫒";
}
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loadjs(url,callback,errcallback,url2,url3);
}
}
</SCRIPT>
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<BODY onload="init()">
12345(闈炴硶甯愬彿)鐨勮闂噺錛?/span><span id="12345"></span><BR>
123456 鐨勮闂噺錛?/span><span id="123456"></span><BR>
20050606 鐨勮闂噺錛?/span><span id="20050606"></span><BR>
</BODY>
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鏁呮剰鍦ㄥ墠涓ゆ璇鋒眰涓埗閫犱簡閿欒錛屽皾璇曞埌絎笁涓猽rl鐨勬椂鍊欐墠鎴愬姛銆?img src ="http://m.tkk7.com/emu/aggbug/354660.html" width = "1" height = "1" />
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鏈鏃╃殑鏂規(guī)硶鍙戣〃鍦╩sdn涓婏細(xì)
http://blogs.msdn.com/b/shivap/archive/2007/05/01/combine-css-with-js-and-make-it-into-a-single-download.aspx
浠g爜鏄儚榪欐牱瀛愮殑錛?br />
function test(){}
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鍙槸榪欐牱css灝卞繀欏昏鍏ㄩ儴鏀懼埌涓琛岄噷闈簡銆傛垜鍋氫簡涓鐐圭偣灝忎慨鏀規(guī)潵璇曞浘鍙互鍚堝茍澶氳鐨刢ss鎴栬呭涓猚ss鐨勫唴瀹硅繘鍘伙細(xì)
setTimeout('document.body.innerHTML="<span>Hello World</span>"',0);
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span { background-color: #f00; }
span { color: #0ff; }
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IE9銆丗irefox5銆乻afari5銆乧hrome14涓嬮氳繃銆傛病瑁卭pera錛屼笉鏄お鍏沖績榪欒揣銆?br />
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<HTML>
<BODY>
<div id="output"></div>
<SCRIPT LANGUAGE="JavaScript">
<!--
(function(){
window.onresize=testZoom;
var _screenOriginalWidth=window.screen.width
function testZoom(){
if(window.screen.width<_screenOriginalWidth){
document.getElementById("output").innerHTML="<br>鏀懼ぇ鍟?/span>";
}
if(window.screen.width>_screenOriginalWidth){
document.getElementById("output").innerHTML="<br>緙╁皬鍟?/span>";
}
_screenOriginalWidth=window.screen.width
}
})()
//-->
</SCRIPT>
</BODY>
</HTML>
]]>
<BODY>
<SCRIPT LANGUAGE="JavaScript">
<!--
function a(x,y,z){return b(x,y)*c(z)};
function b(x,y){return c(x)*c(y)};
function c(x){return x+x};
setTimeout("alert(a(1,2,3))",0)
//-->
</SCRIPT>
<SCRIPT LANGUAGE="JavaScript">
<!--
(function (){
window._log=[];
function obj2str(o){
var r = [];
if(typeof o =="string") return "\""+o.replace(/([\'\"\\])/g,"\\$1").replace(/(\n)/g,"\\n").replace(/(\r)/g,"\\r").replace(/(\t)/g,"\\t")+"\"";
if(typeof o =="undefined") return "undefined";
if(typeof o == "object"){
if(o===null) return "null";
else if(!o.length){
for(var i in o)
r.push(i+":"+obj2str(o[i]))
r="{"+r.join()+"}"
}else{
for(var i =0;i<o.length;i++)
r.push(obj2str(o[i]))
r="["+r.join()+"]"
}
return r;
}
return o.toString();
}
function log(s){
_log.push(s);
}
var s=document.getElementsByTagName("SCRIPT")[0].text;
var r=/function (\w+)\(/g;
var fns=s.match(r);
for(var i=0;i<fns.length;i++){
fn=fns[i].replace(r,"$1")
if (typeof window[fn]=="function"){
window[fn]=(function(org,fn){
return function(){
log("榪涘叆:"+fn+"\n璋冪敤鍙傛暟錛?/span>"+obj2str(arguments));
var r=org.apply(null,arguments);
log("閫鍑?"+fn+"\n榪斿洖鍊?/span>"+obj2str(r));
return r
}
})(window[fn],fn)
}
}
})()
setTimeout("alert(window._log.join('\\n\\n'))",100)
//-->
</SCRIPT>
</BODY>
</HTML>
]]>
絎竴涓猚ache-read鑰楁椂0.2縐掑錛岀浜屼釜錛堝茍琛屽彂璧鳳級0.3縐掑錛岀涓変釜0.4縐掑錛屾帴涓嬪幓姣忎釜鍥劇墖鐨勮楁椂宸笉澶氶兘姣斾笂涓涓參0.1縐掍互涓娿傜粨璁哄緢鏄庢樉浜嗭紝騫跺彂鐨刢ache-read浼?xì)鐩镐簰鍫靛锛岄潪甯镐弗閲嶇殑鐩镐簰鍫靛銆?br />
浠ヤ笂鎶撳寘鏄湪IE6涓嬪畬鎴愮殑銆傚湪IE7鍜孖E8涓嬮潰鎯呭喌瑕佸ソ涓浜涳紝浣嗘槸闂鎬ц川鏄浉鍚岀殑銆?br />
寰堝鎴戜滑鏇劇粡浠ヤ負(fù)cache鐨勯潪甯稿ソ閫熷害搴旇闈炲父蹇殑web搴旂敤錛屼篃璁稿叾瀹炲瓨鍦ㄧ潃涓ラ噸鐨刢ache-read閫熷害鐡墮鑰屼笉涓烘垜浠墍鐭ャ?br />
緗戜笂娌℃湁鎼滃埌澶鍏充簬cache-read鏃墮棿鐨勬枃绔狅紝鐪嬫潵鐪熸槸涓洸鐐廣?br />
瑙e喅鏂規(guī)鍜岀綉緇滃歡榪熸槸綾諱技鐨勶紝鍑忓皯cache-read璇鋒眰錛屾妸澶氫釜灝忔枃浠跺拰灝忓浘鐗囧悎騫舵垚澶ф枃浠跺拰澶у浘鐗囷紙鑰屼笉瑕佷竴鍘㈡儏鎰跨殑浠ヤ負(fù)灝忔枃浠惰嫻忚鍣ㄧ紦瀛樺悗浼?xì)鏈夊緢濂界殑閫熷害琛ㄧ幇錛夛紝鍖哄垎浼樺厛綰у紩鐢ㄨ祫婧愩傝繕鏈変竴涓彲鑳芥湁鐢ㄧ殑錛氫氦閿欑殑鍙戣搗涓嶅彲閬垮厤鐨勫紓姝ュ姩鎬佺綉緇滆姹傚拰cache-read璇鋒眰錛岃緗戠粶寤惰繜鍜宑ache-read寤惰繜鏃墮棿鍙犲姞鍦ㄤ竴璧鳳紝鏉ヨ妭鐪佺敤鎴峰疄闄呰絳夊緟鐨勬椂闂淬?/p>
鏂囩珷浣滆呰“璺戝埌寰蔣閭d竴鏌?緇欑殑絳斿璁╂垜鍚愯:Do not enable HTTP compression for the script files 璇蜂笉瑕佸鑴氭湰鏂囦歡寮鍚痟ttp鍘嬬緝 鍙ソ鍦ㄦ湇鍔″櫒绔鍔犲嫻忚鍣ㄧ殑璇嗗埆浠g爜,濡傛灉鏄痠e6,灝變笉鍘嬬緝鑴氭湰鏂囦歡浜?铏界劧鑴氭湰鑳借繍琛屼簡,鍙槸鐢ㄦ埛浣撻獙灝?.. 鍝?鎴戞仺ie 6”
鍞夛紝璇村暐濂藉憿錛?/p>
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If you use a Cache-Control: no-cache HTTP header to prevent the files from caching, remove that header. In some situations, if you substitute an Expires HTTP header, you do not trigger the problem.
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Do not enable HTTP compression for the script files.
Emu铏界劧鑻辨枃姣旇緝鐑傦紝鍥涚駭鑰佽冧笉榪囷紝涓轟簡鏂逛究澶у榪樻槸緲昏瘧涓涓嬪惂錛屼笉鐒跺張璇ユ湁浜鴻涓嶄笅鍘諱簡銆?br />
1.濡傛灉浣犱嬌鐢ㄤ簡Cache-Control: no-cache 榪欎釜 HTTP 澶存潵闃叉鏂囦歡琚紦瀛橈紝縐婚櫎榪欎釜澶村氨濂戒簡銆傛湁浜涙儏鍐典笅錛屽鏋滀綘鐢ㄤ竴涓狤xpires澶存潵浠f浛錛堝墠闈㈣繖涓嚭闂鐨刪ttp澶達(dá)級錛岋紙涔熷彲浠ヨ搗鍒扮浉鍚屼綔鐢ㄨ岋級涓嶄細(xì)瑙﹀彂榪欎釜闂銆?/em>
鎴栬?/p> 2.涓嶈鍘嬬緝鑴氭湰鏂囦歡銆?/em>
浣滆咃細(xì) KeeKim Heng, Google Web Developer
鍦ㄦ垜浠紑鍙戜簰鑱旂綉瀵屽簲鐢紙RIA錛夋椂錛屾垜浠粡甯稿啓涓浜沯avascript鑴氭湰鏉ヤ慨鏀規(guī)垨鑰呭鍔犻〉闈㈠厓绱狅紝榪欎簺宸ヤ綔鏈緇堟槸DOM鈥斺旀垨鑰呰鏂囨。瀵硅薄妯″瀷鈥斺旀潵瀹屾垚鐨勶紝鑰屾垜浠殑瀹炵幇鏂瑰紡浼?xì)濯勫搷鍒板簲鐢ㄧ殑鍝嶅簲閫熷害銆?/p>
DOM鎿嶄綔浼?xì)瀵艰嚧娴忚鍣ㄩ噸瑙f?reflow)錛岃繖鏄祻瑙堝櫒鐨勪竴涓喅瀹氶〉闈㈠厓绱犲浣曞睍鐜扮殑璁$畻榪囩▼銆傜洿鎺ヤ慨鏀笵OM錛屼慨鏀瑰厓绱犵殑CSS鏍峰紡錛屼慨鏀規(guī)祻瑙堝櫒鐨勭獥鍙eぇ灝忥紝閮戒細(xì)瑙﹀彂閲嶈В鏋愩傝鍙栧厓绱犵殑甯冨眬灞炴ф瘮濡俹ffsetHeithe鎴栬卭ffsetWidth涔熶細(xì)瑙﹀彂閲嶈В鏋愩傞噸瑙f瀽闇瑕佽姳璐硅綆楁椂闂達(dá)紝鍥犳閲嶈В鏋愯Е鍙戠殑瓚婂皯錛屽簲鐢ㄥ氨浼?xì)瓒婂揩銆?/p>
DOM鎿嶄綔閫氬父瑕佷笉灝辨槸淇敼宸茬粡瀛樺湪鐨勯〉闈笂鐨勫厓绱狅紝瑕佷笉灝辨槸鍒涘緩鏂扮殑欏甸潰鍏冪礌銆備笅闈㈢殑4縐嶄紭鍖栨柟妗堣鐩栦簡淇敼鍜屽垱寤篋OM鑺傜偣涓ょ鏂瑰紡錛屽府鍔╀綘鍑忓皯瑙﹀彂嫻忚鍣ㄩ噸瑙f瀽鐨勬鏁般?br />
鏂規(guī)涓錛氶氳繃CSS綾誨悕鍒囨崲鏉ヤ慨鏀笵OM
榪欎釜鏂規(guī)璁╂垜浠彲浠ヤ竴嬈℃т慨鏀逛竴涓厓绱犲拰瀹冪殑瀛愬厓绱犵殑澶氫釜鏍峰紡灞炴ц屽彧瑙﹀彂涓嬈¢噸瑙f瀽銆?/p>
闇姹傦細(xì)
錛坋mu娉細(xì)鍘熸枃浣滆呭啓鍒拌繖閲岀殑鏃跺欒剳瀛愭樉鐒剁煭璺簡涓涓嬶紝鎶婂悗闈㈢殑Out-of-the-flow DOM Manipulation妯″紡瑕佽В鍐崇殑闂緇欐憜鍒拌繖閲屾潵浜嗭紝涓嶈繃浠庣ず鑼冧唬鐮佷腑寰堝鏄撴槑鐧戒綔鑰呯湡姝f兂鎻忚堪鐨勯棶棰橈紝鍥犳emu灝變笉鐓х炕鍘熸枃浜嗭級
鎴戜滑鐜板湪闇瑕佸啓涓涓嚱鏁版潵淇敼涓涓秴閾炬帴鐨勫嚑涓牱寮忚鍒欍傝瀹炵幇寰堢畝鍗曪紝鎶婅繖鍑犱釜瑙勫垯瀵瑰簲鐨勫睘鎬ч愪竴鏀逛簡灝卞ソ浜嗐備絾鏄甫鏉ョ殑闂鏄紝姣忎慨鏀逛竴涓牱寮忓睘鎬э紝閮戒細(xì)瀵艱嚧涓嬈¢〉闈㈢殑閲嶈В鏋愩?br />
瑙e喅鏂規(guī)
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