Simulate ctrl+v event on javascript

Question

I try to simulate Ctrl+V in javascript. I use firefox in Linux. What I do is:

var pressEvent = document.createEvent ("KeyboardEvent");    
pressEvent.initKeyEvent ("keypress", true, true, window, true, false, false, false, 86, 0);
var accepted=aTarget.dispatchEvent (pressEvent);

Somebody knows why it doesn't work??

Thanks

Security reasons? You can't just read the clipboard without the user letting you. — John Dvorak
– John Dvorak, Commented Feb 13, 2013 at 18:31
@I'mBlueDaBaDee you could provide the user a textbox to paste into. Opacity:0 might work, but the CTRL+V does have to be there. — John Dvorak
– John Dvorak, Commented Apr 26, 2017 at 14:45
@JanDvorak Is there something like Notification.requestPermission() for that? — Lucas
– Lucas, Commented Apr 26, 2017 at 15:44

TheBrain · Accepted Answer · 2013-02-13 18:34:56Z

6

Copy and Paste and the clipoard itself are very protected. Unless there is explicit user action it won't work with simulations. If you make a script that simulates a paste inside a inputbox then submit that to your server, you might get some really private info from people clipboards. So...no, that won't work to my knowledge. I would love for you or someone else to prove me wrong and share the solution.

But do tell what you're planning to do and maybe there's a workaround it that doesn't involve this simulated action.

answered Feb 13, 2013 at 18:34

TheBrain

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2 Comments

user2069499 Over a year ago

I don't think it'll be a security problem, because it works in Windows.. What I want to do is cut some text and paste it in other place. Simulate ctrl+a and ctrl+x works fine but ctrl+v not.

Honinbo Shusaku Over a year ago

@TheBrain I'm attempting to create a clipboard context menu option. When a user clicks one of the submenus, it pastes the associated text into whatever textbox/page is active.

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