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Regex Tutorial: Searching for an HTML tag

What is a Regex?

Regex or Regexp, short for regular expression, is a search pattern, consisting of a specific sequence of characters. Practical application of regex include: checking if newly created usernames, passwords, and/or emails meet a certain criteria, phone number validation, URL validation, searching and replacing text in text editors or word processors, and etc...

Table of Contents

• Regex Tutorial: Searching for an HTML tag
• What is a Regex?