jquery :contains selector using variable

Question

Why is it that using variable within :contains() doesn't work? Is there any way to make it work? filter('contains()') didn't work either.

<h2>Test</h2>
<div>Test</div>

var model = $('h2').text();
//variable doesn't work
$('div:contains(model)').css('background','yellow');
//obviously, string works
$('div:contains("Test")').css('background','yellow');

Answer 1

Selectors doesn't use Javascript variables. You have to put the value from the variable in the selector string:

$('div:contains("' + $modele + '")')

Answer 2

Unlike PHP, Javascript does not support string interpolation.

If you want to use a variable inside a string, you must concatenate it using the + operator.