firefox don’t work
microsoft edge don’t work
internet explorer work
Firefox is blocking the command. Push F12 and you will see the warning “document.execCommand(‘cut’/‘copy’) was denied because it was not called from inside a short running user-generated event handler.”
That’s what I was referring to at the beginning. Some browsers (some versions) may allow it some others may not. The only way to make sure it works is to do it from a client event. There is not way around it in any web system.
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