Javascript Cheatsheet

JavaScript is a high-level, interpreted programming language that conforms to the ECMAScript specification. It's a core technology of the World Wide Web, enabling interactive web pages and is an essential part of web applications.

Functions are reusable blocks of code that perform specific tasks. They can take inputs (parameters), process data, and return outputs. JavaScript supports various ways to define and use functions, including function declarations, expressions, and arrow functions.

Objects and arrays are fundamental data structures in JavaScript. Objects store collections of key-value pairs, while arrays store ordered lists of values. Both offer powerful methods for manipulation and iteration.

DOM manipulation allows you to dynamically modify the structure, style, and content of web pages using JavaScript.

Asynchronous JavaScript allows code to run in the background without blocking the main thread. This is useful for handling operations that may take some time to complete, such as fetching data from a server or reading large files.

JavaScript has evolved significantly since ES6 (ES2015). Here's a breakdown of features by version.

Error handling in JavaScript allows you to gracefully manage and respond to runtime errors, preventing your application from crashing and providing meaningful feedback to users or developers.

Modules in JavaScript allow you to organize code into separate files, making it easier to maintain and reuse. They provide a way to encapsulate related functionality and control access to it.

Following best practices in JavaScript helps write clean, efficient, and maintainable code. These practices cover code style, performance optimization, and debugging techniques.