Question

I need help forming regex to limit user input to only numerics and only up to 10 occurrences.

I have regex that is working to keep input to numerics only, but I cannot limit it to up to 10.

Here is what I have:

^(0|[1-9][0-9]*)$

I am okay accepting negative numbers, decimals, and 0’s. Any advice?

Answer 1

^\s*([0-9)+){0,10}\s*$

This basically says I want to 0 to 10 things, where each thing is all digits. I added the \s* on either side to allow the user to have put spaces before or after their numbers. This would accept things like

10 1231231 1231 1231 23112 123123

If what you really want is just a single number, that is only up to 10 digits, it is even easier:

^\s[0-9]{1,10}\s$