how to set body of page to full screen size like f11 in asp.net or javascript

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for online examination when user clicks on start exam the page should be displayed in full screen size(F11) and should not exit full screen and the keyboard controls should not work. is it possible with javascript? if yes, please let me know how it is possible...

Posted 24-Aug-15 0:44am

Harish Sadhu

Updated 24-Aug-15 0:45am

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Richard Deeming · Answer 1 · 2015-08-24T03:00:00

There is an experimental full-screen API, but it's not consistent between browsers:
http://caniuse.com/#feat=fullscreen[^]

There's a project on GitHub which attempts to hide these changes behind a consistent API:
https://github.com/sindresorhus/screenfull.js/[^]

However, this API will NOT allow you to enter full-screen mode without user interaction, and it will NOT prevent the user from exiting full-screen mode. And that's a good thing. If a random website was able to take over your entire screen, and prevent you from accessing anything else on your computer, that would be a major security problem.