regex - How to match the exact number of digits with regular expression in Javascript -

in javascript, have done following:

var matched = searched.match(/\d{7}/)

it works great if searched 1234567 or xyz1234567. both return 1234567, good. 123 , xyz123 return null, expected.

but 1 condition fails when searched 12345678 or xyz12345678. both return null because exact 7 digit match. both return 2345678 instead.

/\d{7}$/ not work either.

can please advise?

thank you

(?:\d|^): begins non-digit

(?:\d|$): ends non-digit

var matched = searched.match(/(?:\d|^)(\d{7})(?:\d|$)/); if (matched) {    matched = matched[1];  }

Scrio