Question

I have a Firefox addon that injects/executes a jQuery script on every page at sub.example.com. The script doesn’t work on one page of the site, because of bad design. Is there any way to stop the script from being executed if a certain element is located on the page?

EDIT: The script I am using has to be executed before the DOM loads. Is there any way to access the HTML file itself and find out if the element exists?

Answer 1

Since jQuery collections are just beefed up arrays, they each have a length property, which tells you how many elements it has matched:

jQuery(document).ready(function($)
{
    if ( $('#someElement').length ) return;
    // All of your code should go here...
});