As a web development student, I have developed a tutorial explaining a specifics of regex so that we can understand the search pattern the regex defines
A Regex or regular expression is a sequence of characters that define a search pattern. Usually such patterns are used by string-searching algorithms for "find" or "find and replace" operations on strings. It also looks for input validations. It is a technique commonly developed in theoretical computer science.
We will look a a string of code using regex, this code looks for a match HTML tag.