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JavaScript »ñȡʼþ¶ÔÏóµÄÒ»¸ö×¢Òâµã
2009-7-24 ÉÏÎç
- JS/Ajax/AS/Flex
- event
- javascript
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function
getEvent
(
event
)
{
return
event
||
window
.
event
// IE:window.event
}
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function
getEvent
()
{
return
arguments
[
0
]
||
window
.
event
// IE:window.event
}
ÕâÑùµÄд·¨ÔÚ³ý Firefox£¨²âÊÔ°æ±¾£º3.0.12£¬ÏÂͬ£© ÍâµÄä¯ÀÀÆ÷ÉÏÔËÐж¼²»»áÓÐÎÊÌ⣬µ« Firefox
ΪʲôÀýÍâÄØ£¿ÈÃÎÒÃÇÕâÑùÒ»ÖÖÇéÐΣº
<button
id
=
"btn"
onclick
=
"
foo
()
"
>
°´Å¥
</button>
<script>
function
foo
(){
var
e
=
getEvent
();
alert
(
e
);
}
</script>
ÔËÐнá¹ûÔÚ Firefox ÖÐÊÇ undefined
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ÔÚ Firefox Öе÷ÓÃÆäʵÊÇÕâÑùµÄ£¬Ïȵ÷ÓÃÖ´ÐеÄÊÇ£º
function
onclick
(
event
)
{
foo
();
}
È»ºóµ÷ÓÃÖ´ÐеÄÊÇ£º
function
foo
(){
var
e
=
getEvent
();
alert
(
e
);
}
»á·¢ÏÖÔÚ Firefox Ï onclick
=
"foo()"
ÖÐµÄ foo
()
ÎÞ·¨×Ô¶¯´«Èëʼþ¶ÔÏó²ÎÊý£¬¶øÄ¬ÈÏ´«µÝ¸øÁËϵͳÉú³ÉµÄ
onclick º¯Êý£¬ÄDZ¾ÀýÎÒÃÇ¿ÉÒÔͨ¹ý getEvent
.
caller
.
caller
.
arguments
[
0
]
»ñµÃʼþ¶ÔÏó¡£
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function
getEvent
(
event
)
{
var
ev
=
event
||
window
.
event
;
if
(!
ev
)
{
var
c
=
this
.
getEvent
.
caller
;
while
(
c
)
{
ev
=
c
.
arguments
[
0
];
if
(
ev
&&
(
Event
==
ev
.
constructor
||
MouseEvent
==
ev
.
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}
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}
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