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ת×Ô£ºhttp://www.cnblogs.com/greki/archive/2009/06/02/1494863.html
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1. »ìºÏ¹¹Ô캯Êý/Ô­ÐÍ·½Ê½
function  Car(sColor, iDoors, iMpg) {
this .color  =  sColor;
this .doors  =  iDoors;
this .mpg  =  iMpg;
this .drivers  = new  Array(“Mike”, “Sue”);
}
Car.prototype.showColor  = function  () {
  alert( this .color);
};
var  oCar1  = new  Car(“red”,  4 ,  23 );
var  oCar2  = new  Car(“blue”,  3 ,  25 );
oCar1.drivers.push(“Matt”);
alert(oCar1.drivers);  // outputs “Mike,Sue,Matt”
alert(oCar2.drivers);  // outputs “Mike,Sue”
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2 . ¶¯Ì¬Ô­ÐÍ·½Ê½

function  Car(sColor, iDoors, iMpg) 
{
this .color  =  sColor;
this .doors  =  iDoors;
this .mpg  =  iMpg;
this .drivers  = new  Array(“Mike”, “Sue”);
if  ( typeof  Car._initialized  ==  “undefined”) 
{
    Car.prototype.showColor  = function  () 
{
      alert( this .color);
    } ;
    Car._initialized  = true ;
  }
}
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JavaScript³£Ó÷½·¨×ܽᗗ¼¸¸ö±íµ¥ÑéÖ¤µÄ

¼¸¸ö±íµ¥ÑéÖ¤µÄ
function checkMail(obj,error)
{
if (obj == null)
return "NULL";
if (obj.value == "")
return "EMPTY";
var filter = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
if (filter.test(obj.value))
return true;
else
alert(error);
return false;
}
......

Javascript²Ù×÷Cookie

<script>
function getCookieVal(offset) {
  var endstr = document.cookie.indexOf(";",offset);
  if(endstr == -1)
    endstr = document.cookie.length;
  return unescape(document.cookie.substring(offset,endstr));
}
function FixCookieDate(data) {
  var ba ......

JavaScript_ÅжÏÍøÂçͼƬÊÇ·ñ´æÔÚ

//̽²âͼƬÊÇ·ñ´æÔÚ
function IsExist(url)
{
x = new ActiveXObject("Microsoft.XMLHTTP")
x.open("HEAD",url,false)
x.send()
return x.status==200
}
ÅжÏijһ¸öÍøÂçµØÖ·µÄͼƬÊÇ·ñ´æÔÚ£¬Èç¹û´æÔÚ£¬¾Í»á·µ»Øtrue ,²»´æÔھͷµ»Ø false~~~~ ......
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