Extra info

.exec()	the .exec() function outputs the substring('s) that matches the RegExp or null on a mismatch.
.test()	this will return true if a substring matches the RegExp and otherwise it wilm return false.
.match()	.match() will output the matching substring('s) or null on a mismatch.
.search()	this will search for the matching substring('s) and return the index of it. Returns -1 if it fails.
.replace()	the .replace() function will replace the matching substring('s) with your replacement substring.
.split()	.split() will split all matches with commas, unless it is changed by a given substring with the .join() function.

[REGEX] RegEx functions