I have an array with objects, each object, a div, has an id.
Can I retrieve the array index number of a given object based on its id using this?
var index = ar.map(function(el) {
return el. ??
}).indexOf('objectID4');
-
possible duplicate of stackoverflow.com/q/19111224/1636522user1636522– user16365222013-12-18 07:39:30 +00:00Commented Dec 18, 2013 at 7:39
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3 Answers
Like this:
var index = ar.map(function(el) {
return el.id;
}).indexOf('objectID4');
working example: http://jsfiddle.net/bvT6B/
3 Comments
user3024007
I tried that, I'm getting -1. and I know that objectID4 exists for sure
thefourtheye
@user3024007 May be case sensitivity kicks in
user3024007
yes, I see... I have to figure out why my live code is not taking it
check for below code
var ar = [{'id':'objectId1','foo':'bar'},{'id':'objectId4','foo':'bar'}]
var index = ar.map(function(el) {
return el.id;
}).indexOf('objectId4');
alert(index);
Or you can see in http://jsfiddle.net/VJrWc/
If this is not you want the share some more code and clear your goal.
Comments
It this what you want?
<div id="x1" class='foo'></div>
<div id="x2" class='foo'></div>
<div id="x3" class='foo'></div>
<div id="res"></div>
<script>
function getIndexOfById(uid) {
var id = null;
$('.foo').each(function() {
if ($(this).attr('id') == uid) {id = $(this).index();}
});
return id;
}
$('#res').html(getIndexOfById('x1') + ' / ' + getIndexOfById('x2') + ' / ' + getIndexOfById('x3'));
</script>
The result is
0 / 1 / 2
