mbeaudru/modern-js-cheatsheet

Modern JavaScript Cheatsheet is a reference document, not a software tool, aimed at developers who know basic programming but get confused when reading modern JavaScript code. It targets the gap between "I understand JavaScript fundamentals" and "I can comfortably read real-world codebases or learn frameworks like React." The guide focuses specifically on features introduced in ES2015 (also called ES6), the major 2015 update to JavaScript that is now standard in virtually every codebase. The document explains concepts like arrow functions (a shorter syntax for writing functions), destructuring (a shorthand for extracting values from objects and arrays), Promises and async/await (tools for managing code that runs asynchronously, like fetching data from a server), template literals (a cleaner way to embed variables in strings), spread operators, classes, imports and exports, and how the JavaScript keyword "this" behaves. Each section includes short explanations, code examples, and links to deeper resources. You would use this as a companion while learning a JavaScript framework, starting a new job, or reviewing code written by someone with more experience. It is not a tutorial for absolute beginners but a targeted reference for someone who already has some coding background and needs to decode the syntax patterns they keep encountering in modern projects.