JavaScript

Building a Simple CAPTCHA System in JavaScript Without Dependencies   Spam and automated bots are common nuisances when building web forms. To prevent bot submissions, a well-known solution is the…

'Debounce' vs 'Throttle' Explained Visually (with JS Code)   Debounce and throttle are two commonly used techniques in JavaScript to control how often a function is executed over time. They…

Node.js Script to Back Up Your MongoDB Daily via Cron Job   When managing production-grade applications, database backups are your safety net. Automating those backups ensures you can recover data…

Scrape Job Listings with Node.js and Cheerio   Web scraping offers immense value when it comes to automating data collection for personal or professional projects. Imagine being able to extract…

Interactive Form Validation With Vanilla JavaScript Only   Form validation is one of the most important aspects of client-side development. While modern libraries like React or Vue offer form validation…

Using JavaScript to Scrape Table Data from Any Web Page   Web scraping is a powerful way to retrieve data without relying on APIs. Whether you're analyzing public data or…

Functional JavaScript: Build a Compose Utility from Scratch   Functional programming in JavaScript can drastically simplify your code by reducing side effects and enhancing composability. Whether you're transforming data or…

Design a Simple Rate Limiter Using Redis and Node.js   Rate limiting is a crucial technique for controlling traffic to your APIs and protecting your application from abuse, DDoS attacks,…

How Async/Await Works under the Hood in JavaScript   Async/await has made asynchronous programming in JavaScript more readable and expressive. But have you ever wondered how it actually works under…

Web Scraping with Cheerio.js: Extract Job Listings into CSV   Web scraping has become an essential tool for gathering data from websites for analysis, automation, or reporting. In this tutorial,…