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HyperText Markup Language (HTML) is the standard markup language for documents designed to be displayed in a web browser. It defines the content and structure of web content. It is often assisted by technologies such as Cascading Style Sheets (CSS) and scripting languages such as JavaScript. HTML describes the structure of a web page semantically and originally included cues for its appearance.
Cascading Style Sheets (CSS) is a style sheet language
used for specifying the presentation and styling of a document written
in HTML. CSS is designed to enable the separation of content and
presentation, including layout, colors, and fonts. This separation
improves content accessibility, provides more flexibility and controls
in the specification of presentation.
The name
cascading comes from the specified priority scheme to
determine which declaration applies if more than one declaration of a
property match a particular element.
JavaScript; abbreviated as JS, is a programming
language and core technology of the Web, alongside HTML and CSS. 99% of
websites use JavaScript on the client side for webpage behavior. Web
browsers have a dedicated JavaScript engine that executes the client
code.
JavaScript is a high-level, often just-in-time compiled language that
conforms to the ECMAScript standard. It has dynamic typing,
prototype-based object-orientation, and first-class functions. It has
Application Programming Interfaces (APIs) for working
with text, dates, regular expressions, standard data structures, and the
Document Object Model (DOM).