jQuery.inArray()Method
jQuery Miscellaneous MethodsExamples
Returns the index value of the specified element in the array
<div>"John", at index value<span></span>was found at the position</div>
<div>4, at index value<span></span>was found at the position</div>
<div>"Karl" was not found, so it returns<span></span> </div>
<div>"Pete" is in the array, but not at a position with index greater than 2, so it returns<span></span></div>
<script>
$(function () {
var arr = [ 4, "Pete", 8, "John" ];
var $spans = $( "span" );
$spans.eq( 0 ).text( jQuery.inArray( "John", arr ) );
$spans.eq( 1 ).text( jQuery.inArray( 4, arr ) );
$spans.eq( 2 ).text( jQuery.inArray( "Karl", arr ) );
$spans.eq( 3 ).text( jQuery.inArray( "Pete", arr, 2 ) );
})
</script>
Try it yourself »
Definition and Usage
The $.inArray() function is used to search for a specified value in an array and returns its index value (if not found, returns -1)
Tip:The source array is not affected; the filter result is only reflected in the returned result array.
Syntax
$.inArray( value, array [, fromIndex ] )
| Parameter | Description |
|---|---|
| value | Any type The value to search for. |
| array | Array type Specifies the array to be searched. |
| fromIndex | Optional. Number type Specifies to start searching from the specified index position of the array, defaulting to 0. |
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