> 原文:[https://www . geeksforgeeks . org/onkey press-onkey up-and-onkey down-events-in-JavaScript/](https://www.geeksforgeeks.org/onkeypress-onkeyup-and-onkeydown ...
`onKeyDown` and `onChange` onKeyDown fires when a key is pressed. It's useful for handling specific key presses (e.g., Enter, Escape) onChange fires when the value of an input element changes.
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