Regular Expressions: Restrict Possible Usernames -- Feedback on my solution?

[MikeMaer]

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freeCodeCamp Challenge Guide: Restrict Possible Usernames

Restrict Possible Usernames Solutions

Solution 1 (Click to Show/Hide)

let username = "JackOfAllTrades"; let userCheck = /^[a-z][a-z]+\d*$|^[a-z]\d\d+$/i; let result = userCheck.test(username); console.log(result) <a name="code-explanation-3" class="anchor" href="#code-explanation-3"></a>Code Explanation ^ - start of input [a-z] - first character is a letter [a-z]+ - following characters are letters \d*$ - input ends with 0 or more dig…