Tell us what’s happening:
I got this regular expression and on https://regex101.com it matches the failed tests. Can anyone explain why it fails on the FCC tests?
Your code so far
function telephoneCheck(str) {
let regex = /^(1\s?)?(\(\d{3]\)|\d{3})[\s\-]?\d{3}[\s\-]?\d{4}$/;
return regex.test(str);
}
telephoneCheck("555-555-5555");
Your browser information:
User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.89 Safari/537.36
.
Challenge: Telephone Number Validator
Link to the challenge: