Restrict Possible Usernames Strange solution

Tell us what’s happening:

This code is working, but i have a question…

In the requirements it says that " Your regex should not match J"

How is this posible?

Your code so far

let username = "JackOfAllTrades";
let userCheck = /[^\d$]/gi; // Change this line
let result = userCheck.test(username);

Link to the challenge:

You can look at Match Characters that Occur One or More Time, which comes before this challenge, or you can look ahead to Specify Only the Lower Number of Matches, or you can research how to require a miniumum number of characters using regular expressions to find other solutions.