How to remove 0 at the beginning of a number?

Question

JavaScript

I'm trying to write a filter for input so that only numbers in a certain range can be entered there. And the problem is that numbers like: 0100pass ((

How can you convert numbers to such?

020=> 20
0100=> 100

And if there is one 0, then leave one 0:

0=>0

Answer 1

parseInt()
but it takes a string, you can convert the received value to String(value)