Why this code doesn't functionnate?

[ndaverrin01]

Tell us what’s happening:
Describe your issue in detail here.

  **Your code so far**

function telephoneCheck(str) {


let regex=/(^1?)(-?)(\s?)(\(?)([0-9][0-9][0-9])(\))(-?)(\s?)([0-9][0-9][0-9])(-?)(\s?)([0-9][0-9][0-9][0-9]$)/
return regex.test(str);

}

console.log(telephoneCheck("555-555-5555"));

  **Your browser information:**

User Agent is: Mozilla/5.0 (X11; Linux x86_64; rv:100.0) Gecko/20100101 Firefox/100.0

Challenge: Telephone Number Validator

Link to the challenge:

freeCodeCamp.org

[udaaff]

@ndaverrin01

(\))

it requires the presence of the )

And as a side note, this regex could be greatly optimized. You don’t need that many capturing groups, also, you may use quantifiers and escape sequences for digits.