HTML (HyperText Markup Language)

Références

Éléments de bloc

Les éléments de bloc sont une catégorie d'éléments HTML (Hypertext Markup Language), opposés aux éléments en ligne. Leur caractéristique principale réside dans le fait qu'ils sont séparés par un saut de ligne avant et après l'élément (créant ainsi un bloc de contenu). Ce faisant, ils prennent la largeur de leurs conteneurs.

Image avec ressources d'origines multiples (CORS) activées

La spécification HTML introduit un attribut crossorigin pour les images qui, combinées avec l'en-tête CORS (Cross-Origin Resource Sharing) approprié, permet aux aux images définies via l'élément <img> provenant d'emplacements étrangers d'être utilisées dans le canevas de la même manière que si elles avaient été chargées depuis l'origine de la page actuelle.

Attributs de réglage du CORS

En HTML5, certains des éléments HTML supportant le CORS (Cross-Origin Resource Sharing) comme les <img> ou les <video>, ont un attribut crossorigin (propriété crossOrigin), qui permet de configurer les requêtes CORS pour les données de l'élément à renvoyer.

La vérification orthographique dans les formulaires HTML

Firefox 2 a introduit le support pour la vérification orthographique dans les zones de texte et les champs de texte des formulaires HTML. L'utilisateur peut choisir d'activer ou non cette fonctionnalité via l'interface about:config et d'appliquer cette vérification soit aux zones de texte et aux champs de texte soit seulement aux zones de texte ...

DASH Adaptive Streaming for HTML 5 Video

Dynamic Adaptive Streaming over HTTP (DASH) est un protocole de streaming adaptatif : il permet de changer le débit de la vidéo en fonction des performances réseau, afin que la vidéo ne soit pas interrompue.

Focus management in HTML

In the HTML5 working draft, the activeElement DOM attribute and the hasFocus() DOM method give the programmer the ability to have better control of the interactivity of the page due to the user's actions. For example, both of them can be used for statistical usage purposes, tracking the number of clicks on certain links of a page, measuring the amount of time an element is focused, and so forth. In addition, when combined with AJAX technology, they help minimize the number of requests to the server, depending on the user activity and the page layout.

Global attributes

Global attributes may be specified on all HTML elements, even those not specified in the standard. That means that any non-standard elements must still permit these attributes, even though using those elements means that the document is no longer HTML5-compliant. For example, HTML5-compliant browsers hide content marked as <foo hidden>...<foo>, even though <foo> is not a valid HTML element.

HTML attribute reference

Elements in HTML have attributes; these are additional values that configure the elements or adjust their behavior in various ways to meet the criteria the users want.

HTML documentation index

Found 183 pages:

HTML element reference

This page lists all the HTML elements.

HTML reference

HTML is the language that describes the structure and the semantic content of a Web document; it consists of elements, each of which may be modified by some number of attributes.

Inline elements

HTML (Hypertext Markup Language) elements are usually "inline" elements or "block-level" elements. An inline element occupies only the space bounded by the tags that define the inline element. The following example demonstrates the inline element's influence:

Link types

In HTML, the following link types indicate the relationship between two documents, in which one links to the other using an <a>, <area>, or <link> element.

Media formats supported by the HTML audio and video elements

Technical review completed.

Microformats

Microformats (sometimes abbreviated μF) are small patterns of HTML for marking up entities like people, organizations, events, locations, blog posts, products, reviews, resumes, recipes, etc.
They are simple conventions to embed semantics in HTML and quickly provide an API to be used by search engines, aggregators, and other tools.

Optimizing your pages for speculative parsing

Traditionally in browsers the HTML parser has run on the main thread and has blocked after a </script> tag until the script has been retrieved from the network and executed. The HTML parser in Firefox 4 and later supports speculative parsing off the main thread. It parses ahead while scripts are being downloaded and executed. As in Firefox 3.5 and 3.6, the HTML parser starts speculative loads for scripts, style sheets and images it finds ahead in the stream. However, in Firefox 4 and later the HTML parser also runs the HTML tree construction algorithm speculatively. The upside is that when a speculation succeeds, there's no need to reparse the part of the incoming file that was already scanned for scripts, style sheets and images. The downside is that there's more work lost when the speculation fails.

Using the application cache

HTML5 provides an application caching mechanism that lets web-based applications run offline. Developers can use the Application Cache (AppCache) interface to specify resources that the browser should cache and make available to offline users. Applications that are cached load and work correctly even if users click the refresh button when they are offline.

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Guides et tutoriaux

Guide de développement HTML

Des articles MDN qui illustrent certaines techniques à utiliser quand vous créez du contenu web avec HTML, ainsi que des tutoriaux et d'autres contenus pertinents pour développer en HTML. Ce guide propose des cours et astuces sur le développement HTML.