document.execCommand API & Clipboard API All In One

'document.execCommand' is deprecated

document.execCommand(aCommandName, aShowDefaultUI, aValueArgument)

https://developer.mozilla.org/en-US/docs/Web/API/Document/execCommand

copy & cut

https://developer.mozilla.org/en-US/docs/Web/API/Document/copy_event

document.addEventListener("copy", function(event) {
  //
});

document.oncopy = function(event) {
 //
}

https://developer.mozilla.org/en-US/docs/Web/API/Document/cut_event

document.addEventListener("cut", function(event) {
  //
});

document.oncut = function(event) {
 //
}

Clipboard API

The Clipboard API can be used instead of execCommand in many cases, but execCommand is still sometimes useful.

在许多情况下，可以使用 Clipboard API 代替 execCommand，但 execCommand 有时仍然有用。

https://developer.mozilla.org/en-US/docs/Web/API/Clipboard_API

W3C Editor's Draft 11 March 2022

"insertFromPaste", "insertFromPasteAsQuotation"

https://w3c.github.io/input-events/#overview

https://stackoverflow.com/questions/60581285/execcommand-is-now-obsolete-whats-the-alternative

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