Hello had a little problem understanding this code. Is there anyone who could help me understand this, please. Thanks

JavaScript
1

Tell us what’s happening:

Your code so far


let username = "JackOfAllTrades";
let userCheck = /^[a-z]([0-9][0-9]|[a-z]+\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_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/79.0.3945.130 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

can you explain what you understand so we know where to start to explain things?

3

Your code has been blurred out to avoid spoiling a full working solution for other campers who may not yet want to see a complete solution. In the future, if you post a full passing solution to a challenge and have questions about it, please surround it with [spoiler] and [/spoiler] tags on the line above and below your solution code.

Thank you.