In this tutorial, we suggest two methods of checking whether your given string matches the RegEx. Suppose you want to check whether a string matches the following regex:
The simplest and fastest method is the test() method of regex.
The match() regex method can also be used for checking the match which retrieves the result of matching a string against a regex:
However, test() is faster than match(). Use test() for a fast boolean check. Use match() for retrieving all matches when using the g global flag.