Regular Expressions 101

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Regular Expression
Created·2016-02-14 08:05
Flavor·ECMAScript (JavaScript)

/
^((1\s?)?(\d{3}|\(\d{3}\)))[\-|\s]?\d{3}[\-|\s]?\d{4}$
/
gm
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Description

Regex for validating us telephone number as per freecodecamp testcases-

Submitted by Yashdeep Hinge