Best way to locate source of Warning: Empty string passed to getElementById()

Question

Warning: Empty string passed to getElementById().
Source File: chrome://browser/content/browser.xul
Line: 0

Some days ago I star

Answer 1

This answer was really helpful to me in finding why it was happening so I decided to share.

I've placed the following code OUTSIDE document.ready and got this error.

// Enable Line Items ONLY AFTER general info is filled out!
$( "#client_estimate_continue_next" ).click(function(e) {
//e.preventDefault();
console.log(this.id + ' click event fired.');

// DO SOMETHING...

});

I was able to fix the error by simply placing it INSIDE document.ready

Additional info:

I got the error but in my case it was coming from my own script according to FireFox.

I believe I got the error because I made a reference to the id of an element that was not yet fully rendered eg. NOT ready.

Warning: Empty string passed to getElementById().