What is the difference between \s and \t?

Question

They both seem to work but I have been told you should use both when you're forming a RegExp?

Answer 1

\s matches any whitespace character, including tabs. \t only matches a tab character.

\t being a subset of \s, you should not have to use both at the same time.

Answer 2

\s matches a single whitespace character, which includes spaces, tabs, form feeds, line feeds and other unicode spaces.

\t Matches a single tab.

If you are using \s, you don't need to include \t.

More information on regex patterns here: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp