Checking whole string with a regex

Question

I\'m trying to check if a string is a number, so the regex \"\\d+\" seemed good. However that regex also fits \"78.46.92.168:8000\" for some reason, which I do not want, a l

Answer 1

\d+ matches any positive number of digits within your string, so it matches the first 78 and succeeds.

Use ^\d+$.

Or, even better: "78.46.92.168:8000".isdigit()