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HTML

Sébastien Merour
publié le 13/06/2020 à 15h46 | modifé le 13/06/2020 à 19h00
Catégorie : LangagesCommentaires (6590)
HTML
Description

HTML signifie : Hypertext Markup Language

Le langage HTML est constitué :

- de balises (tags en anglais)

- d'attributs (attributes)

- d'éléments (ce qui se trouve entre la balise ouvrante < et la balise fermante >).

Structure d'une page Web

Une page HTML est constituée au minimum :

- du doctype (pour indiquer au navigateur que le document est de type HTML)

- des balises qui elles-mêmen renferment 2 autres balises : et : ces 3 balises  sont les balises de premier niveau.

La section Head

La balise head renferme plusieurs balises qui sont interprétées par le navigateur, mais dont le contenu n'est pas affiché sur la page.

La section Head contient de nombreuses balises, parmi lesquelles nous trouvons : l'encodage de la page (le plus souvent UTF-8), le titre de la page (balise title) . On y trouve également des balises meta, des liens vers des feuilles de style CSS, et parfois des scripts en Javascript.

Les différentes balises meta et title jouent un rôle primordial pour le référencement.

La section Body

Elle contient au contraire tout ce qui sera affiché sur la page web dans le navigateur. Il existe de nombreux types de balises :

- les balises sectionnantes (permettant de diviser la page en plusieurs sections, comme header, nav, section, footer, article. Elles sont primordiales car elles donnent des indicationx aux moteurs de recherche qui parcourent les pages web).

- les balises de structuration du texte (comme les headings, les blockquotes, les paragraphes)

- les balises de listes (numérotées ou non)

- les balises de tableau (désormais déconseillées pour construire une page web, mais parfois très utiles pour construire le template d'une newsletter)

- les balises de formulaire (form, input, textarea...)

- les balises génériques (div, span...)

Mode d'affichage des éléments HTML

Il existe également une autre façon de distinguer certains types de balises.

On parle parfois en effet de :

- balises "inline" qui permettent de définir l'affichage d'un élément sans retour à la ligne. Parmi les balises inline, nous avons par exemple les balises  span, a, strong, img ...

- balises "blocks": elles occupent toute la largeur disponibles. Lorsque 2 éléments de type "blocks" se suivent, ils sont disposés par défaut l'un en dessous de l'autre. Nous avons par exemple les balises div, h1, p, ul, form, table, blockquote.

-de balises "invisibles" : elles ne s'affichent pas sur la page, comme par exemple la balise meta, inclue dans la partie head de la page.

Fonctionnalités
HTML permet d'écrire de l'hypertexte. Il permet de structurer sémantiquement et logiquement le contenu des pages web, mais aussi d'inclure des éléments multimédia tels que des images ou des vidéos.
Année de création
1992
Créateur
Web Hypertext Application Technology Working Group
Dernière version
5.2
Langage
HTML
Liens
Aux dernières nouvelles
Actuellement, la dernière version du HTML est le HTML 5. Mais les membres du groupe de travail du W3C veulent créer un HTML Living Standard, une version du HTML qui n'aurait pas de numéro de version. Ainsi le HTML serait en constante évolution.

6590 Commentaire(s)
  1. user
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    19/06/2026 à 16h18  commentaire modifé
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  2. user
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    19/06/2026 à 16h16  commentaire modifé
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  3. user
    luxury car rental miami_xoml
    19/06/2026 à 16h15  commentaire modifé
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  4. user
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    19/06/2026 à 16h14  commentaire modifé
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  5. user
    luxury car rental miami_lsml
    19/06/2026 à 16h14  commentaire modifé
    Okay folks gather round — another Miami rental horror story coming at you. Then you actually drive to the rental lot. Plus they put a $5000 hold on your card and tell you "it's just standard procedure". Fool me thirteen times? That's just living in the 305. When you're hunting for a legit luxury car rental miami. Miami without proper wheels is basically a nightmare. leather seats that won't fuse to your skin in the August heat. most are polished garbage with fake five-star reviews bought from some shady service. no games, no bait-and-switch, no hidden fees buried on page 4 of the contract. prices change by the hour so don't sleep on it: rent a urus for a day https://luxury-car-rental-miami-13.com also bring polarized shades unless you enjoy driving into the sun like a blind bat every evening. Anyway glad there's at least one honest rental joint left in this town.

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