Regular expression for twitter username

Question

I need a javascript regular expression to match twitter usernames.

The username is entered by the user while signing up, so I don\'t want to distract them with too m

Answer 1

This could be help for a Full Match :

^@(?=.*\w)[\w]{1,15}$

Testing: @John_Doe2000

Results:

Match 1
Full match  0-13    @John_Doe2000

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