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3 years, 5 months ago

Why does the backspace key sometimes become a back-page key in Firefox? How do I get it back to deleting text?

Once in a while I'm deep into an email or other text box entry and use the backspace key and... I'm brought back to the previous browser page, sometimes losing everything I had typed. Why does it happen? How do I prevent it? How do I get back to the normal backspace function when it does happen?
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sanguivore | 3 years, 5 months ago
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To change that behavior, type "about:config" into the address bar. Type "backspace" into the Filter field, and you should see

browser.backspace_action

change the value based on what you want it to do (2 disables):

"browser.backspace_action in about:config which defaults to 0, which is the default action of going back one page. Setting it to 1 scrolls back one page, with an option to shift + delete to scroll down one page (neither of which seem that useful to me). And setting it to 2 (or any other value) disables any action other than simply deleting a character."

From the comments at:
http://ffextensionguru.wordpress.com/2006/09/22/disable-backspace-navigation/

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sanguivore's Avatar
sanguivore | 3 years, 5 months ago Report

Yeah, I really don't like having that as the default behavior. It is really nice to be able to turn it off.

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m1sael | 3 years, 5 months ago Report

Wow! Thanks! I didn't make the question but I had the same problem.

sanguivore's Avatar
sanguivore | 3 years, 5 months ago Report

I found the why on http://kb.mozillazine.org/Browser.backspace_action

"The backspace key was mapped to the browser ‘Back’ function in Mozilla for consistency with Internet Explorer. However, to improve consistency with other applications running on Linux, it was decided that this mapping should be optional—and set based on which platform the browser was running on. As a compromise, this preference was created to allow the backspace key to either go back/forward, scroll up/down a page, or do nothing."

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jonathan h | 3 years, 5 months ago
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If you click 'delete' or 'backspace' in Firefox without your cursor being in a text window, the default is for the page to go 'back' to the previous window.. For example, if I'm in Gmail, and my browser button clicks on an area outside the text window and I accidentally click delete, it'll ask me to discard my e-mail because it functions the same as if I had clicked the 'back' button.

It's annoying, but that's just the way that Firefox functions.

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mrgunn | 3 years, 5 months ago
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The backspace key is called that as a holdover from typewriter days, where the only function of the key was just to move the cursor back. Now that keyboards are used for so many different things besides typing documents, although we still keep the same basic design because people are used to it, keys which normally have no function are appropriated for different uses.

Like jonathan said, if the cursor is in a text area, the keys function in word processing mode. When you're not in a text area, backspace would just be a big, conveniently located, useless key, so developers have given it a function. I actually use backspace to go back a page all the time.

If you'd like to reassign your keyboard shortcuts, however, there are some extensions you can use to do that, the use of which is not within the scope of this question.

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sassystatgrl | 3 years, 4 months ago Report

So, for those of you who actually like this function, doesn't it ever happen at the wrong time? Typing in this box right now, if I so much as lightly graze my laptop's mouse pad with my wrist (I assume that's why?) before I hit backspace, it will navigate to the previous page and I will lose everything. Who cares if the backspace is useless while I'm not typing? So is f, and e, and, well, I could go on. If you want a special Go Back button, then make a special one. Far away from my backspace.

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