Question

I’m trying to create a JavaScript Regex to test for:

a valid # between 0 and 99.9 (where only a single decimal digit is allowed)
e.g. 3.45 is not valid.

so, blank is ok, any integer between 0 and 99 is ok, and a decimal value is allowed.

I have this so far, but it is allowing values like 3.45 to pass:

$^|$[0-9][0-9]?^|$[0-9][0-9]?.[0-9]^

Answer 1

Two problems I can see:

• You mixed up ^ and $.
• Your decimal point needs escaping \..