HTML, or HyperText Markup Language, is a foundational element of the internet[2] as we know it today. It was proposed by Tim Berners-Lee in the 1980s, and has since undergone numerous revisions and updates. HTML is used to structure content on the web, from the text we read to the multimedia we consume. Various versions of HTML, such as HTML 2.0, HTML 3.2, and HTML 4.0, have been published over the years, each refining and expanding upon the capabilities of the previous versions. The most recent iteration, HTML5, was standardized in 2014 and includes a wealth of new features like video and audio support, local storage capabilities, and new semantic elements. HTML is also crucial for SEO (Otimização para motores de busca[1]) and accessibility.
HyperText Markup Language ou HTML is the standard markup language for documents designed to be displayed in a navegador web. It defines the content and structure of web content. It is often assisted by technologies such as Cascading Style Sheets (CSS) and scripting languages tais como JavaScript.
Filename extension |
|
---|---|
Internet media type |
text/html |
Type code | TEXT |
Uniform Type Identifier (UTI) | public.html |
Developed by |
|
Lançamento inicial | 1993 |
Latest release | |
Type of format | Document file format |
Container for | HTML elements |
Contained by | Navegador Web |
Extended from | SGML |
Extended to | XHTML |
Open format? | Sim |
Sítio Web | html |
Web browsers receive HTML documents from a servidor web or from local storage and render the documents into multimedia web pages. HTML describes the structure of a página web semantically and originally included cues for its appearance.
HTML elements are the building blocks of HTML pages. With HTML constructs, images and other objects such as interactive forms may be embedded into the rendered page. HTML provides a means to create structured documents by denoting structural semantics for text such as headings, paragraphs, lists, esquerda, quotes, and other items. HTML elements are delineated by tags, written using angle brackets. Tags such as <img>
e <input>
directly introduce content into the page. Other tags such as <p>
e </p>
surround and provide information about document text and may include sub-element tags. Browsers do not display the HTML tags but use them to interpret the content of the page.
HTML can embed programs written in a scripting language tais como JavaScript, which affects the behavior and content of web pages. The inclusion of CSS defines the look and layout of content. The World Wide Web Consortium (W3C), former maintainer of the HTML and current maintainer of the CSS standards, has encouraged the use of CSS over explicit presentational HTML since 1997.[atualizar] A form of HTML, known as HTML5, is used to display video and audio, primarily using the <canvas>
element, together with JavaScript.