Restrict Possible Usernames - Char Quantities

JavaScript
#1

Tell us what’s happening:
Is there a way to specify the number of chars you want in a field. So I want to regex to specify that there must be 2 or more [a-z] chars at the start of the string. I know there is + for one or more and * for zero or more. How about for other numeric values?

Your code so far


let username = "JackOfAllTrades";
let userCheck = /$[a-z]d*$/i; // Change this line
let result = userCheck.test(username);

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.100 Safari/537.36.

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

#2

Challenge link: Regular Expressions: Specify Exact Number of Matches

#3

Oh! Thanks! It got confusing since the solution to this challenge uses a skill which isn’t taught yet. But there almost always more efficient ways to solve any problem. :smile:

Good luck!

#4

you know the character for one or more, you can totally make it without the quantifiers
if you need “two or more” just add one to “one or more”

/\d+/;        // one or more digits
/\d\d+/;    // two or more digits
#5

The challenges and their order have changed over the years, and the solutions are written by volunteers, so they sometimes include methods that you may not have learned from fcc.

#6