This guide was created to help myself and you learn more about regular expressions and how to use them. Regular expressions are special characters that define a search pattern.

The regular expression, or regex for short, below is a search pattern for matching a Url. Since this regular expression is between two slashes it is called a regular expression literal. It is made up of anchors, grouping constructions, bracket expressions, and quantifiers. We will look at each component of the regular expression so they make more sense.
/^(https?:\/\/)?([\da-z\.-]+)\.([a-z\.]{2,6})([\/\w \.-]*)*\/?$/