It's very helpful when extract data from logs, messy JSON data from API calls, and many other situations. I'm going to teach you how to valid a phone number with 1 line of code, with 1 regular ...

For instance, in the phone number regular expression: In the first case, the inner parentheses ($1,$2 and $3) are evaluated first, then the engine moves outside of it and grabs the full number ($4).

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In this Regex Tutorial, you will learn how to validate the featured email address regular expression (regex) Regex Featured in This Tutorial: /^([a-z0-9_\.-]+)@([\da-z\.-]+)\.([a-z\.]{2,6})$/. The ...