How to Check If Key Press (event.key) is a Number in JavaScript đ[All Method]ī¸
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The blog is about How to Check If Key Press (event.key) is a Number in JavaScript & provides a lot of information to the novice user and the more seasoned user. By the end of this guide, you will know how to handle these types of problems.
Question: What is the best way to approach this problem? Answer: Check out this blog code to learn how to fix errors How to Check If Key Press (event.key) is a Number in JavaScript. Question: What is causing this error and what can be done to fix it? Answer: Check out this blog for a solution to your problem.
After checking for a keypress
event, suppose we want to check if the pressed key is a number 0-9
.
We can use isFinite()
on event.key
, which will check if event.key
is a finite number.
const getCode = (e) => {
e = e || window.event;
return e.key;
};
const handleKeyPress = (e) => {
const key = getCode(e);
if (isFinite(key)) {
console.log(`Number ${key} was pressed!`);
}
};
document.addEventListener("keypress", handleKeyPress);
Revise the code and make it more robust with proper test case and check an error there before implementing into a production environment.
Final Note: Try to Avoid this type of mistake(error) in future!