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{
FONT-SIZE: 30pt;
color : #1A6841;
left:expression(eval(document.body.clientWidth)/2-150);
top:expression(eval(document.body.clientHeight)/2-25);
width:300px;
height:50px;
border:green 1px solid;
background:#99CCFF;
+position:absolute;
+left:expression(eval(document.body.scrollLeft)+eval(document.body.clientWidth)/2-150);
+top:expression(eval(document.body.scrollTop)+eval(document.body.clientHeight)/2-25);
}
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ÍøÒ³ÕýÎÄÈ«Îĸߣºdocument.body.scrollHeight
ÍøÒ³±»¾íÈ¥µÄ¸ß£ºdocument.body.scrollTop
ÍøÒ³±»¾íÈ¥µÄ×ó£ºdocument.body.scrollLeft
ÍøÒ³ÕýÎIJ¿·ÖÉÏ£ºwindow.screenTop
ÍøÒ³ÕýÎIJ¿·Ö×ó£ºwindow.screenLeft
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2009 12 25´«ÖDz¥¿Í——JavaScript£ºJQuery


 
ʹÓùýAJAX¼¼ÊõµÄÈ˶¼ÖªµÀ´óÃû¶¦¶¦µÄJQuery¡£ËäÈ»ÎÒÀ´Ñ§Ï°Ö®Ç°Óп´¹ýAJAXµÄÊÓÆµ£¬µ«ÄÇʱ¶ÔWEBÓ¦ÓÃÕâ¸ö¶«Î÷»¹±È½ÏÄ£ºý£¬²»Çå³þHTML¡¢JSPÓëServletÊÇÔõô¹¤×÷µÄ£¬ÉõÖÁ²»ÖªµÀJQuery°ü×°µÄÊÇʲô¶«Î÷¡£½ñÈÕµÄѧϰÔÙ½áºÏ×òÌìµÄJavaScriptDOMµÄÄÚÈÝ£¬ÈÃÎÒ¶Ô´ËÊ®·ÖÇåÎú¡£JQueryÔ­Ôò£º“write less, do more.”£¬Õâ¾ä»°Òѳä·Ö˵Ã÷Ëü¶Ô¼ò»¯Ê¹ÓÃJavaScriptDOM±à³ÌµÄ¹¦Á¦£¡
 
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javascript ÀúÊ·Õ»

var Stack=function(limt_length){
this.stack=new Array();
this.limt=(limt_length)?limt_length:8;
}
Stack.prototype.push=function(o){
 if(this.exist(o)){
  this.remove(o);
  this.stack.unshift(o);
 }else{
  this.stack.unshift(o);
 }
 while(this.stack.length>this.limt){
 this.stack=this.stack.reverse();
 this.stack.shift();
 this.stack=this.stack.reverse();
 }
};
Stack.prototype.pop=function(){
 
 return this.stack.shift();
};
Stack.prototype.exist=function(o){
 return (this.getIndex(o)>-1);
};
Stack.prototype.getIndex=function(o){
 var ret=-1;
 for(var i=0,len=this.stack.length;i<len;i++){
 if(this.stack[i]==o){return i;}
 }
 return ret;
};
Stack.prototype.remove=function(o){
 var _i=this.getIndex(o);
 if(_i>-1){
 var fArray=this.stack.slice(0,_i);
 
 var bArray=this.stack.slice(_i+1,this.stack.length);
&nb ......

JavaScriptµÄnamespace(Ò»)

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alert('hello');
// --></mce:script>
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<a href="#" mce_href="#" id="t" ></a> hello </a>
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<a href="#" mce_href="#" id="t"> hello </a>
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var _t = document.getElementById('t');
_t.onclick = function() {
alert('hello');
}
// --></mce:script>
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javascript ÅжÏÖÐÎÄ×Ö·û³¤¶È

<script language="javascript">   
String.prototype.gblen = function() {   
    var len = 0;   
    for (var i=0; i<this.length; i++) {   
        if (this.charCodeAt(i)>127 || this.charCodeAt(i)==94) {   
            len += 2;   
        } else {   
            len ++;   
        }   
    }   
    return len;   
}   
String.prototype.gbtrim = function(len, s) {   
    var str = '';   
    var sp  = s || '';   
    var len2 = 0;   
    for (var i=0; i<this.length; i++) {   
        if (this.charCodeAt(i) ......
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