Make the backspace key not take you back a page in Firefox.

Modern day browsers make the backspace key act as a key that can take you back a page in your browser. But with the heavy usage of that key already in action on many web forms and any other typing needs it would make more sense to disable the default behavior of the backspace key in your browser to act just like a backspace key when it comes to text editing.

Follow these simple instructions to disable the backspace key’s default behavior of taking you back a page in your browser.

Type "about:config" in Firefox.

Click on the "I’ll be careful, I promise" button to continue.

Type-in "browser.backspace_action" on the Filter box.

When the filtered entry show up double-click on the entry and change the value from 0 to 2.

Close out all the dialogs and from now on Firefox won’t treat the backspace key as a back button on your browser.