Regular Expressions 101

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Regular Expression
Created·2021-05-29 08:16
Flavor·JavaScript

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

regex code for US telephone number validation for freecodecamp exercise

Submitted by Erik @raxsonic