Dynamic Variable Selectors in JQuery

Question

If I have a varibale that changes on certain conditions how do I select it using Jquery selectors?

var id = 2
alert($('.'+id+ ' .title').val());

Please clarify the question. What you have looks fine, aside from the fact that the variable is called "id" but you're using a class selector. — Matt Ball
– Matt Ball, Commented Dec 1, 2011 at 22:34

Evan · Accepted Answer · 2011-12-01 22:51:55Z

1

your problem here is that you are starting a classname with a number. class names must start with an _ a - or a letter.

switch up your structure so its:

var id = 2
alert($('.' + 'title' + id).val());

or some variation so that id starts with an underscore, dash, or letter:

var id = 2
alert($('._' + id + ' .title').val());

answered Dec 1, 2011 at 22:51

Evan

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1 Comment

The selector in your first example would be ..title2.