12/19/2023 0 Comments Key code javascript![]() const input = document.getElementById('myInput') If yes, then the pressed key is a number otherwise not. Next, in the event listener function, we need to check if the key code of the pressed key is between 48 to 57 or not. ![]() The keyup event is fired whenever we press a key and release it. Now, let’s add an event listener to this input so that we could listen to the keyup event. Let’s say we have a text input box in our HTML file with some id myInput: So, if the Unicode value of the key pressed lies between 48 to 57(including), it is a number otherwise not. We know that the Unicode value of 0 is 48, Unicode value of 1 is 49, and so on up to 57 which is the Unicode value of 9. Both properties return the Unicode value of the key pressed. To check if the key pressed is a number or not, you can use event.ke圜ode or event.which property.
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