Ò׽ؽØÍ¼Èí¼þ¡¢µ¥Îļþ¡¢Ãâ°²×°¡¢´¿ÂÌÉ«¡¢½ö160KB

JavascriptÖеÄarguments ¶ÔÏó


function
 fn(a,b,c)
{
    
var
 s 
=
 
""
;
    
var
 i;
    s 
+=
 
"
º¯Êý´«Èë²ÎÊý¸öÊý:
"
 
+
 fn.arguments.length 
+
 
"
\n
"
;
    
for
 (i
=
0
;i
<
fn.arguments.length;i
++
)
    {
        s 
+=
 
"
º¯Êý´«Èë²ÎÊý
"
 
+
 i 
+
"
:
"
 
+
 fn.arguments[i] 
+
 
"
\n
"
;
    }
    s 
+=
 
"
º¯Êýʵ¼Ê²ÎÊý¸öÊý:
"
 
+
 fn.arguments.callee.length 
+
 
"
\n
"
;
    document.all.t.innerText 
=
 s
}


Ïà¹ØÎĵµ£º

javascript´´½¨Êý×é

ÔÚJavaScriptÖÐûÓжàάÊý×éµÄ¸ÅÄî
µ«ÊÇ¿ÉÒÔÄ£ÄâʵÏÖ
1ά
//1 ²»ÄÜÈ·¶¨Êý×élengthµÄÇé¿öÏ£¬ÏÈÉùÃ÷Ò»¸öÊý×éÃû£¬È»ºóÔÙÖð¸ö¸³Öµ¡£
var tArray=new Array();
tArray[0]='A';
tArray[1]='2';
//2 ÖªµÀÈ·ÇеÄlength£¬´´½¨Êý×é
var tArray=new Array(10);
//3 ´´½¨Êý×éµÄͬʱ²¢¸³Öµ
var tArray=new Array('A','2','3', ......

7 JavaScript Differences Between Firefox & IE

Although the days of long and tedious code branches to target specific browsers in JavaScript are over, once in a while it's still necessary to do some simple code branching and object detection to ensure that a certain piece of code is working properly on a user's machine. 
In this article, I ......

JavaScript KeyCodeÊý×Ö¼üÅ̶ÔÓ¦

keycode    8 = BackSpace BackSpace
keycode    9 = Tab Tab
keycode   12 = Clear
keycode   13 = Enter
keycode   16 = Shift_L
keycode   17 = Control_L
keycode   18 = Alt_L
keycode   19 = Pause
keyc ......

ÉîÈëÀí½âJavascript±Õ°ü(closure)

×î½üÔÚÍøÉϲéÔÄÁ˲»ÉÙJavascript±Õ°ü(closure)Ïà¹ØµÄ×ÊÁÏ£¬Ð´µÄ´ó¶àÊǷdz£µÄѧÊõºÍרҵ¡£¶ÔÓÚ³õѧÕßÀ´Ëµ±ð˵Àí½â±Õ°üÁË£¬¾ÍÁ¬ÎÄ×ÖÐðÊö¶¼ºÜÄÑ¿´¶®¡£×«Ð´´ËÎĵÄÄ¿µÄ¾ÍÊÇÓÃ×îͨË×µÄÎÄ×Ö½Ò¿ªJavascript±Õ°üµÄÕæÊµÃæÄ¿¡£
Ò»¡¢Ê²Ã´ÊDZհü£¿
“¹Ù·½”µÄ½âÊÍÊÇ£ºËùν“±Õ°ü”£¬Ö¸µÄÊÇÒ»¸öÓµÓÐÐí¶à±äÁ¿ºÍ°ó¶¨Á ......

javascriptÊý×éΨһ»¯ÊµÏÖ·½Ê½

ʵÏÖ·½Ê½
ÕâÀï¸ø³ö2ÖÐʵÏÖ·½Ê½¡£Ò»ÖÖÊÇ´ó¼ÒÓ¦¸Ã¶¼ÖªµÀµÄindexOf¼ì²âµÄ·½Ê½£¬ÁíÒ»ÖÖÊǽáºÏlastIndexOfºÍspliceʵÏÖ·½Ê½¡£
//Ê×ÏȸøArray¶ÔÏóÔ­ÐÍÉÏÌí¼ÓindexOfºÍlastIndexOf·½·¨.(Èç¹ûûÓеϰ)
if(!Array.prototype.indexOf){
Array.prototype.indexOf = function(element, index){
var length = this.len ......
© 2009 ej38.com All Rights Reserved. ¹ØÓÚE½¡ÍøÁªÏµÎÒÃÇ | Õ¾µãµØÍ¼ | ¸ÓICP±¸09004571ºÅ