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 function IgnoreSpaces(Str){
    var ResultStr = "";
    Temp=Str.split(" ");//Ë«ÒýºÅÖ®¼äÊÇÒ»¸ö¿Õ¸ñ
    for(i = 0; i < Temp.length; i++){
    ResultStr +=Temp[i];
    }
    return ResultStr;
}
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//javascriptÈ¥¿Õ¸ñº¯Êý
function LTrim(str){ //È¥µô×Ö·û´®µÄ Í·¿Õ¸ñ
var i;
for(i=0;i if(str.charAt(i)!=" "&&str.charAt(i)!=" ") break;
}
str = str.substring(i,str.length);
return str;
}
 
function RTrim(str){//È¥µô×Ö·û´®µÄ β¿Õ¸ñ
var i;
for(i=str.length-1;i>=0;i--){
if(str.charAt(i)!=" "&&str.charAt(i)!=" ") break;
}
str = str.substring(0,i+1);
return str;
}
 
function Trim(str){//È¥µô×Ö·û´®µÄ ǰ¡¢Î²¿Õ¸ñ£¨×¢ÒâÊǵ÷ÓÃÒÔÉÏÁ½¸ö·½·¨Ó´£©
 
return LTrim(RTrim(str));
 
}
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Æä´Î.Õâ¸ö·½·¨Ê¹ÓÃÁËJavaScript µÄprototype ÊôÐÔ
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objectName.prototype
objectName ²ÎÊýÊǶÔÏóµÄÃû³Æ¡£
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ÀýÈ磬ҪΪ Array ¶ÔÏóÌí¼Ó·µ»ØÊý×éÖÐ×î´óÔªËØÖµµÄ·½·¨¡£ÒªÍê³ÉÕâÒ»µã£¬ÉùÃ÷¸Ãº¯Êý£¬½«Ëü¼ÓÈë Array.prototype£¬²¢Ê¹ÓÃËü¡£
function array_max( ){
var i, max = this[0];
for (i = 1; i < this.length; i++)
{
if (max < this[i])
max = this[i];
}
return max;
}
Array.prototype.max = array_max;
var x = new Array(1, 2, 3, 4, 5, 6);
var y = x.max( );
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classZ·Ö±ð¼Ì³ÐclassXºÍclassY
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function ClassZ(){
this.newMethod=classX;
this.newMethod();
delete this.newMethod;
this.newMethod=classY;
this.newMethod();
delete this.newMethod;
}
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MD5 javascript

 /*****************************************************************************
* md5.js
*
* A JavaScript implementation of the RSA Data Security, Inc. MD5
* Message-Digest Algorithm.
*
* Copyright (C) Paul Johnston 1999. Distributed under the LGPL.
************************************** ......
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