The event is wrong on IE 11 when I don't allow the website to access my clipboard

[Dragon-Rider]

Hi, there :)

I found the "events" of clipborde.js don‘t work well on IE 11, when I didn't allow the website to access to my clipboard.

Minimal example

https://jsfiddle.net/EragonJiang/6zuguyjx/3/

Expected behaviour

If you choose "Don't allow" on IE 11(Windows 7), and then click the "copy" button, you can't copy anything from the input box, and the event should be ‘error’.

Actual behaviour

Instead of 'error', what I saw was that 'success' happened instead and my clipboard is empty.

Browsers affected

I tested on all major browsers and IE 11 and 10 does not work.

[Dragon-Rider]

I read your source code and found that you use the parameter 'succeeded' to check the "document.execCommand(this.action)". And I test it on IE. If I choose “don't allow the website access to the clipboard”, then I execute this command（“document.execCommand(copy)”）. It still return 'true'，but my clipboard is empty.

[zenorocha]

Hey @Dragon-Rider, this is a known issue #77 https://github.com/zenorocha/clipboard.js/wiki/Known-Issues. At this moment, there are no solutions for this problem. If you have an idea, please feel free to send a pull request.