CSS
Practical CSS Guide for Busy Developers
Why waste time memorizing stuff you will never use? Here's the only CSS tutorial you will ever need to start styling web pages.
Vincas Stonys
Teaching react after basics | Follow me to escape the tutorial hell and learn to build real-world web applications with ReactJS
Deep Dive
Modernizing Old React Patterns With React Hooks
Learn how to replace HOCs, render props and container components with custom React hooks.
Performance
Throttle and Debounce in Javascript and React
Debounce and throttle are one of the most common optimization techniques in JavaScript. Learn to use them in React.
Quick Guide
Get the Current Timestamp in JavaScript
Learn to get a timestamp in milliseconds or Unix format from a Date object or string.
Quick Guide
How to Upload Files With React
Learn to build a custom file input that selects files using the HTML input element and upload them as FormData in React.
Quick Guide
How to Redirect to URL in ReactJS
Learn to redirect and navigate to external URLs in React and JavaScript.
Quick Guide
How to Remove Duplicates from an Array in JavaScript
Learn to deduplicate an array by using Set for primitive values or by using a simple memorization technique for an array of objects.
Quick Guide
How to Scroll to Element in React
Learn to use scrollIntoView to scroll to an element in React. Includes example of scrolling to newly added list item.
Quick Guide
Add CSS Classes Conditionally in React
Learn to apply classNames conditionally in React by using a simple utility function to join strings together.
Deep Dive
How to Use React Portals in the Real World
Learn to solve common real-world problems using React portals from a practical example.
Deep Dive
Learn JavaScript Promises by Building a Custom Implementation
Understand asynchronous JavaScript better than 99% of devs by building your own Promise implementation.