javascript - ReactJs prevent e and dot in an input type number

Question

I would like to prevent e and . to be type in an <input type="number"/>. Without jQuery or using step attribute. I've tried with pattern="[0-9]" but it's not working.

EDIT : On focus the keyboard should be a digit keyboard.

Answer 1

The 'e' is the only letter that's accepted in a number field because it allows for exponents. You could use input type="text" but it doesn't give you the browser's native up and down arrows that type="number" does. And the pattern attribute validates on submission but doesn't stop someone from typing the 'e' in the first place. In REACT you can use this to completely block the 'e' key from being typed in a number input:

<input type="number" onKeyDown={ (evt) => evt.key === 'e' && evt.preventDefault() } />