Restrict Possible Usernames 3 tests not passing

JavaScript
#1

Tell us what’s happening:
I have been stuck in this problem for quite some time. Could someone help me please? Thanks in advance!

Your code so far
let username = “JackOfAllTrades”;
let userCheck = /[^\d*]\w/i; // Change this line
let result = userCheck.test(username);


let username = "JackOfAllTrades";
let userCheck = /^\w$\d*/i; // Change this line
let result = userCheck.test(username);

Your browser information:

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.117 Safari/537.36.

Challenge: Restrict Possible Usernames

Link to the challenge:
https://www.freecodecamp.org/learn/javascript-algorithms-and-data-structures/regular-expressions/restrict-possible-usernames

#2

Hello!

There are some problems with your RegEx.

  1. \w will match any word character: a-zA-Z0-9_, but the challenge asks for alpha numeric characters: a-zA-Z0-9.
  2. The $ is used to delimit the end of a string, hence it should be a the end. In your RegEx, you’re saying match a string that has a single character. The \d* is not taken into account in your RegEx (\w would always match first).
  3. You’re allowing many tests cases to pass. Check the console:
// running tests
Your regex should match JACK
Your regex should not match J
Your regex should match Jo
Your regex should match Oceans11
Your regex should match RegexGuru
Your regex should not match 9
Your regex should match Z97
// tests completed

Check this online regex tester and see if it helps you understand what you’re doing wrong :slight_smile:,

Regards!

PD: $ for your specific RegEx must go at the end, but it can be inside a group.

#3

I ended up looking at the solved equation :confused:but now I understand what I was not doing right. And am able to solve the problem now with full understanding of what I am typing.
-Thankyou for your time

#4