AJAX checkbox if statement

Question

I've got a bunch of variables being pulled from form ID's before being sent in a query string to a PHP. However, as one input is a checkbox I'm trying to get AJAX to set the variables value according to whether it's checked or not. i.e..

 if (document.getElementById('bold').checked) { var bold = "true"; 
 }
 else { var bold = "false"; }

But, it doesn't actually send anything to the PHP. I'm guessing syntax a lot of the time, so if anyone can correct I'd be most grateful.

Answer 1

As long as you've given it a name it should be accessible as "on" or "off" in the backend e.g.

var $checked = $_POST["checkboxname"] == "on";

So your javascript is redundant.

Answer 2

Firstly, instead of: var bold = "true";

I think you're actually looking for something like: document.getElementById('bold').value = "true";

Secondly, if the checkbox is not checked nothing will be sent to the PHP script (unchecked checkboxes are not sent as part of a form submission).