NCVirtual Coding Club Course

Introduction
Responsive Web Design
JavaScript Algorithms and Data Structures
Front End Development Libraries
Data Visualization
APIs and Microservices
Quality Assurance
Scientific Computing with Python
Data Analysis with Python
Information Security
Machine Learning with Python
Coding Interview Prep

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JavaScript Algorithms and Data Structures
Regular Expressions
Restrict Possible Usernames

Restrict Possible Usernames

Summary

Final Code

let username = "JackOfAllTrades";
let userCheck = /^[a-z][a-z]+\d*$|^[a-z]\d\d+$/i;
let result = userCheck.test(username);
console.log(result)