blob: cdae0badc913f5af6b0258e738272399f10e1e32 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
/**
* jQuery tabIndex
*/
( function ( $ ) {
/**
* Finds the lowerst tabindex in use within a selection
*
* @return number Lowest tabindex on the page
*/
$.fn.firstTabIndex = function () {
var minTabIndex = null;
$(this).find( '[tabindex]' ).each( function () {
var tabIndex = parseInt( $(this).prop( 'tabindex' ), 10 );
// In IE6/IE7 the above jQuery selector returns all elements,
// becuase it has a default value for tabIndex in IE6/IE7 of 0
// (rather than null/undefined). Therefore check "> 0" as well.
// Under IE7 under Windows NT 5.2 is also capable of returning NaN.
if ( tabIndex > 0 && !isNaN( tabIndex ) ) {
// Initial value
if ( minTabIndex === null ) {
minTabIndex = tabIndex;
} else if ( tabIndex < minTabIndex ) {
minTabIndex = tabIndex;
}
}
} );
return minTabIndex;
};
/**
* Finds the highest tabindex in use within a selection
*
* @return number Highest tabindex on the page
*/
$.fn.lastTabIndex = function () {
var maxTabIndex = null;
$(this).find( '[tabindex]' ).each( function () {
var tabIndex = parseInt( $(this).prop( 'tabindex' ), 10 );
if ( tabIndex > 0 && !isNaN( tabIndex ) ) {
// Initial value
if ( maxTabIndex === null ) {
maxTabIndex = tabIndex;
} else if ( tabIndex > maxTabIndex ) {
maxTabIndex = tabIndex;
}
}
} );
return maxTabIndex;
};
}( jQuery ) );
|
