How to handle ESC keydown on javascript popup window

Question

I have a javascript window.open popup, and I want the popup to close itself when the user presses the ESC key. I can\'t figure out how to hook the keydown event (and on wha

Answer 1

event.key === "Escape"

No more arbitrary number codes!

document.addEventListener('keydown', function(event) {
    const key = event.key; // const {key} = event; in ES6+
    if (key === "Escape") {
        window.close();
    }
});

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