RegExp Quantifiers

Quantifiers enable you to specify how many times a particular pattern should occur.

The following table lists the various ways to quantify a particular pattern.

Code

Description

?

Either zero or one occurrence

*

Zero or more occurrences

+

One or more occurrences

{n}

Exactly n occurrences

{n,m}

At least n but no more than m occurrences

{n,}

At least n occurrences