Viewport
WebDefinition
The viewport is the visible area of a web page in the browser window. On mobile devices, the viewport can differ from the device screen size. The meta viewport tag controls how the browser scales pages on different device widths, critical for responsive design.
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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.
JavaScript
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.
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.