JavaScript
WebDefinition
JavaScript is a high-level, interpreted programming language that enables dynamic, interactive content on web pages. It runs in the browser via the JavaScript engine (V8, SpiderMonkey) and on the server via Node.js. It is the only scripting language natively supported by all browsers.
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HTML
HyperText Markup Language (HTML) is the standard markup language for creating web pages. It defines the structure and semantic meaning of web content using elements represented by tags. Browsers parse HTML to render the visual structure of a page.
CSS
Cascading Style Sheets (CSS) is a stylesheet language used to describe the visual presentation of HTML documents. CSS controls layout, colors, typography, animations, and responsive design through a cascade of rules applied to HTML elements.
TypeScript
TypeScript is a strongly typed programming language built on top of JavaScript. Developed by Microsoft, it adds optional static typing, interfaces, generics, and decorators to JavaScript. TypeScript compiles to plain JavaScript and runs anywhere JavaScript runs.
JSON
JavaScript Object Notation (JSON) is a lightweight data-interchange format that is easy for humans to read and write, and easy for machines to parse and generate. JSON is the dominant format for REST APIs, configuration files, and data storage.