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HTML

Sébastien Merour
publié le 13/06/2020 à 15h46 | modifé le 13/06/2020 à 19h00
Catégorie : Langages | Commentaires (7798)
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.
7798 Commentaire(s)
  1. user
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    19/06/2026 à 15h44  commentaire modifé
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  2. user
    luxury car rental miami_tqsr
    19/06/2026 à 15h44  commentaire modifé
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    19/06/2026 à 15h44  commentaire modifé
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    19/06/2026 à 15h44  commentaire modifé
    I've paid my dues so you don't have to. Then you actually go to pick up the car. Different car waiting — dents everywhere, smells like cheap air freshener covering something worse, and that "killer price"? Doesn't include the mandatory $55 daily toll pass or the $450 "convenience fee" they invent at checkout. Twenty years in South Florida and these clowns still almost get me. luxury car rental miami florida. anyone who's tried public transport here knows I'm not joking. South Beach dinner, Design District shopping, or a spontaneous Keys adventure — AC must be arctic and unlimited miles non-negotiable. I've tested so many rental companies across Dade, Broward, and Palm Beach. no games, no bait-and-switch, no hidden fees on page 8. Here's the only straight shooter for premium rides across South Florida porsche rental miami porsche rental miami Yeah parking in South Beach will cost you a nice bottle of wine — but that's the Miami tax. Anyway glad there's at least one honest operator left in this town.
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    luxury car rental miami_uksr
    19/06/2026 à 15h40  commentaire modifé
    I've paid my dues so you don't have to. Then you actually go to pick up the car. Plus they freeze $5500 on your card and say "it'll drop off in two weeks". Fool me twenty times? That's just called Tuesday in the 305. those people are professional scammers with nice smiles and better shoes. anyone who's tried public transport here knows I'm not joking. South Beach dinner, Design District shopping, or a spontaneous Keys adventure — AC must be arctic and unlimited miles non-negotiable. most are shiny garbage with fake five-star reviews from God knows where. Finally found one outfit that actually keeps its word. Here's the only straight shooter for premium rides across South Florida lamborghini urus for rent miami lamborghini urus for rent miami Yeah parking in South Beach will cost you a nice bottle of wine — but that's the Miami tax. drive safe and absolutely skip that "windshield protection" upsell — pure profit for them, zero for you.
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