Question

<select id="select">
    <option value="1">1adsd</option>
    <option value="2">2adsd</option>
    <option value="3">3adsd</option>
    <option value="4">4adsd</option>
    <option value="5">5adsd</option>
</select>

var parray = ['2', '5'];
    $("#select").live('change', function(){
        if($.inArray($(this).val(), parray)){
            console.log('yes');
            console.log($(this).val());
            console.log(parray);
        } else {
            console.log('no');
            console.log($(this).val());
            console.log(parray);
        }
    })

Why this doesnt working correctly?

if i select value 1 this show me ‘yes’ but “1” isnt in parray.

if i select value 2 this show me ‘no’ but “2” is in parray.

if i select value 5 this show me ‘yes’ – only this is OK. Why?

LIVE:

http://jsfiddle.net/G5D2V/

Answer 1

As the manual clearly states:

$.inArray returns -1 if the element is not found, or the index where the element has been found (beginning at 0) otherwise.

if($.inArray($(this).val(), parray) >= 0) {