REGEX for whole, positive number

Question

I am trying to create an input regex that will only accept whole, positive numbers. So far I have:

[^[+]?d+([.]d+)?$]

But users can still enter, say, .4. How can I alter this to disallow floats? Thanks!

Answer 1

I think you try to filter only positive integers.

^[1-9]d*$

allows only positive integer numbers. What is the regex for "Any positive integer, excluding 0" will also help you.