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Belgian Biodiversity Platform
yeti
Commits
d52eabae
Commit
d52eabae
authored
Jul 03, 2012
by
Julien Cigar
Browse files
added Array.prototype.indexOf
parent
af383691
Changes
1
Show whitespace changes
Inline
Side-by-side
core.js
View file @
d52eabae
...
...
@@ -19,6 +19,56 @@
}
/***********************************************************************
Global Javascript objects
************************************************************************/
/* Workarounds for browsers which do not natively support some ECMA
* standards.
*
* Although extending the DOM is a very bad idea and considered "evil",
* adding missing methods to global javascript objects is perfectly
* acceptable.
*/
/* This is taken from https://developer.mozilla.org and is exactly the
* one specified in ECMA-262.
*/
if
(
!
Array
.
prototype
.
indexOf
)
{
Array
.
prototype
.
indexOf
=
function
(
searchElement
/*, fromIndex */
)
{
"
use strict
"
;
if
(
this
==
null
)
{
throw
new
TypeError
();
}
var
t
=
Object
(
this
);
var
len
=
t
.
length
>>>
0
;
if
(
len
===
0
)
{
return
-
1
;
}
var
n
=
0
;
if
(
arguments
.
length
>
0
)
{
n
=
Number
(
arguments
[
1
]);
if
(
n
!=
n
)
{
// shortcut for verifying if it's NaN
n
=
0
;
}
else
if
(
n
!=
0
&&
n
!=
Infinity
&&
n
!=
-
Infinity
)
{
n
=
(
n
>
0
||
-
1
)
*
Math
.
floor
(
Math
.
abs
(
n
));
}
}
if
(
n
>=
len
)
{
return
-
1
;
}
var
k
=
n
>=
0
?
n
:
Math
.
max
(
len
-
Math
.
abs
(
n
),
0
);
for
(;
k
<
len
;
k
++
)
{
if
(
k
in
t
&&
t
[
k
]
===
searchElement
)
{
return
k
;
}
}
return
-
1
;
}
}
/***********************************************************************
Str
************************************************************************/
...
...
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