W3Schools is a freemium educational website for learning coding online. [1][2] Initially released in 1998, it derives its name from the World Wide Web but is not affiliated with the W3 …

[14] PHP code is usually processed on a web server by a PHP interpreter implemented as a module, a daemon or a Common Gateway Interface (CGI) executable. On a web server, the …

PHP also supports a C-like sprintf function. Code can be modularized into functions defined with keyword function. PHP supports an optional object oriented coding style, with classes denoted …

When a web page is loaded, the browser creates a Document Object Model of the page, which is an object oriented representation of an HTML document that acts as an interface between …

Hypertext Markup Language (HTML) is the standard [dubious – discuss] markup language [a] for documents designed to be displayed in a web browser. It defines the content and structure of …

An HTML element is a type of HTML (HyperText Markup Language) document component, one of several types of HTML nodes (some common node types include document, document …

JavaScript (JS) [a] is a programming language and core technology of the Web, alongside HTML and CSS. It was created by Brendan Eich in 1995. [6] As of 2025, the overwhelming majority …

A userscript (or user script) is a program, usually written in JavaScript, for modifying web pages [1] to augment browsing. Uses include adding shortcut buttons and keyboard shortcuts, …

HTML5 (Hypertext Markup Language 5) is a markup language used for structuring and presenting hypertext documents on the World Wide Web. It was the fifth and final [4] major HTML version …

In data sanitization, HTML sanitization is the process of examining an HTML document and producing a new HTML document that preserves only whatever tags and attributes are …