how to prevent the backspace conditionally. if no focus in any control in the document ?
I prevent a backspace button conditionally using confirm box. i used event.preventdefault() method to stop the event of i press ok in the conform box. But it works when the focus is on either input or text area elements. if there is no focus in these controls the browser redirects to previous page.
i need your help.. thanks in advance !
由dineshkumar于修改
所有回复 (2)
Hi dineshkumar, Thank you for your question. I understand that there are some default hot keys that are not being prevented in a web page unless they are focused in an input html tag. I do not know if this is for a website you developed or if this is for all websites, but:
If it is for all websites: you can use a key configuration to change it only in Firefox http://kb.mozillazine.org/Keyconfig_extension
If it is in a website:
- Please see the MDN article for more information on the Javascript call you are using: https://developer.mozilla.org/en-US/d.../event.preventDefault
- Here is a relevant stack overflow question: http://stackoverflow.com/questions/13.../event-preventdefault-vs-return-false
Thank you and we hope this helps.
Note that you can disable the backspace button action to go back or forward in the history in Firefox by setting the browser.backspace_action pref to 2 on the about:config page.