Computer scienceProgramming languagesJavaScriptInteraction with a browserDOM Events

Keyboard events handling

Theory

In parentheses

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What do you need to write in parentheses to get an event handler that works after releasing the left Ctrl only?

document.addEventListener("keyup", function(event) {
  if (...) {
    return event;
  }
});

Write only the missing part.

Enter a short text
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