Sharpen Your JavaScript Skills: Today's Practice Problems Inside [PS: 4]

"1 Hour JavaScript": Stay sharp and interview-ready with 1 hour of JavaScript practice problems each week.

Welcome to today's issue of SoftwareEngineer.Careers "1 Hour JavaScript" Newsletter, where we help you stay sharp and interview-ready! Each issue will include a practice problem for both frontend and backend software engineers across different skill levels. Whether you're a junior, senior, or staff engineer, we have something for you. Let's get started!

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Junior Frontend Engineers (Beginner)

State Management

Implement a counter component with React's useState hook.

Problem Description:

In this exercise, you will create a simple counter component using React's `useState` hook. The goal is to familiarize yourself with React hooks and managing component state. Your counter component should increment and decrement a count value when buttons are pressed.

Checklist:

[ ] Set up a basic React project using Create React App

[ ] Create a functional React component

[ ] Use the `useState` hook to manage the count state

[ ] Implement increment and decrement functionality

[ ] Display the current count value in the component

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Junior Backend Engineers (Beginner)

Simple Middleware

Create a simple logging middleware for an Express application.

Problem Description:

In this exercise, you will create a simple logging middleware for an Express application. The middleware should log basic information about incoming requests, such as the method and URL, to the console. This task will help you understand how to create middleware and where to place it in your Express app.

Checklist:

[ ] Set up a basic Express API if you don't already have one

[ ] Create a logging middleware that logs request details

[ ] Apply the middleware to your Express app

[ ] Ensure the middleware logs information for every incoming request

[ ] Test your middleware by making sample requests to the server

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