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Àí½âjavascript closures ±Õ°ü(¶ÁÊé±Ê¼Ç)

 Ê²Ã´ÊDZհü(closures):
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 ÕâÊÇÎÒÀí½âºóµÄÒ»¸ö¶¨Òå,ºÇºÇ!ºÜ»Þɬ°É!²»¹ýû¹ØÏµ,¿ÉÒÔÏÈ¿´¿´ÏÂÃæµÄ½²½â.
 
 
Ò» ÄÚ²¿º¯Êý(inner function)
javascriptÊÇÖ§³ÖÄÚ²¿º¯ÊýÉêÃ÷(inner func ......

Javascript »ñÈ¡ÍøÒ³¸÷¸ß¶È²ÎÊý

 <SCRIPT   LANGUAGE="JavaScript"> 
  var     s   =   ""; 
  s   +=   "\r\nÍøÒ³¿É¼ûÇøÓò¿í£º"+   document.body.clientWidth; 
  s   +=   "\r\nÍøÒ³¿É¼ûÇøÓò¸ß ......

JavaScript×Ö·û´®º¯Êý

 JS×Ô´øº¯Êý
concat
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var a = "hello";
var b = ",world";
var c = a.concat(b);
alert(c);
//c = "hello,world"
indexOf
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var index1 = a.indexOf("l");
//index1 ......

javascript event ʼþ½âÎö

 ÃèÊö event´ú±íʼþµÄ״̬£¬ÀýÈç´¥·¢event¶ÔÏóµÄÔªËØ¡¢Êó±êµÄλÖü°×´Ì¬¡¢°´ÏµļüµÈµÈ¡£ event¶ÔÏóÖ»ÔÚʼþ·¢ÉúµÄ¹ý³ÌÖвÅÓÐЧ¡£  eventµÄijЩÊôÐÔÖ»¶ÔÌØ¶¨µÄʼþÓÐÒâÒå¡£±ÈÈ磬fromElement ºÍ toElement ÊôÐÔÖ»¶Ô onmouseover ºÍ  onmouseout ʼþÓÐÒâÒå¡£ Àý×Ó ÏÂÃæµÄÀý×Ó¼ì²éÊó±êÊÇ·ñÔÚÁ´½ÓÉ ......

javascript²Ù×÷cookie

 //set cookie

function setcookie(name,value){
var Days = 30;
var exp = new Date();
exp.setTime(exp.getTime() + Days*24*60*60*1000);
document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();
}

function getcookie(name) ......
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