Simetricks | HTML

HTML

par Sébastien Merour

publié le 13/06/2020 à 15h46 | modifé le 13/06/2020 à 19h00
Catégorie : Langages | Commentaires (377)

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

whatwg.org

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.

377 Commentaire(s)

AncrReert

06/09/2024 à 21h55 commentaire modifé

If a tumor develops in this area, it can produce all kinds of symptoms, regardless of whether the tumor is cancerous or non-cancerous. the best ways for men to lead rewarding sex lives in bed.End sildenafil dosage by weight by taking advantage of discounts However, in roughly one out of every four cases, the illness lasts up to two weeks.

signaler le commentaire

JesseRot

06/09/2024 à 20h48 commentaire modifé

vibration analysis The Value of Vibration Regulation Apparatus in Mechanical Systems Across manufacturing environments, machines along with spinning machinery serve as the support of output. However, one of the highly common problems that might obstruct the operation as well as longevity is vibrations. Resonance could lead to a series of challenges, such as lowered accuracy along with productivity resulting in greater damage, ultimately causing high-cost interruptions and restoration. Such a situation is where vibration control apparatus becomes essential. The Reason Vibration Management proves Critical Resonance within machines might lead to numerous adverse effects: Decreased Operational Effectiveness: Excessive vibration may lead to discrepancies as well as unbalance, lowering overall effectiveness in the devices. This can result in slower manufacturing speed and greater energy use. Elevated Erosion: Constant resonance accelerates the wear and tear in mechanical parts, resulting in more regular upkeep as well as an chance for unexpected issues. This not only raises operating costs but also reduces the durability of the existing equipment. Safety Risks: Uncontrolled resonance could present significant safety concerns to both the equipment and the machines as well as the operators. In extreme situations, severe cases, it may lead to devastating system collapse, jeopardizing workers and causing considerable destruction across the environment. Accuracy as well as Quality Issues: For fields which rely on high accuracy, such as manufacturing or aerospace, resonance can bring about flaws with the production process, causing flawed products along with increased waste. Affordable Options to Vibration Regulation Putting money in resonance control equipment remains not merely a necessity and a wise choice for all businesses that any company that uses machines. Our state-of-the-art vibration management systems are built to eliminate vibrations within any machine as well as spinning equipment, providing smooth along with efficient functioning. What sets these apparatus above the rest is its reasonable pricing. We know the necessity of cost-effectiveness in the competitive market of today, which is why we offer premium vibration regulation systems at rates that remain budget-friendly. Opting for these tools, you are not just protecting your mechanical systems as well as boosting its productivity but also putting investment into the long-term success in your organization. Conclusion Resonance mitigation is a vital element of maintaining the effectiveness, security, along with lifetime of your machinery. With our economical resonance mitigation apparatus, you can ensure that your processes operate seamlessly, your products maintain top quality, as well as your workers stay safe. Do not allow resonance jeopardize your operations—invest in the proper tools immediately.

signaler le commentaire

Antoniocig

06/09/2024 à 19h53 commentaire modifé

Партнерский маркетинг https://moneymakemedia.com арбитраж трафика и партнерские программы - все это вы найдете на Money Make Media. Наш ресурс поможет вам зарабатывать в сети и быть в курсе последних новостей рынка.

signaler le commentaire

StanleyMeD

06/09/2024 à 16h53 commentaire modifé

Сравнение ТОП-10 разработчиков чат-ботов https://chatbotmarket.ru в России: плюсы, технические возможности, кому подходят, клиенты. Chatme.ai, Just AI, AutoFAQ, Lia, CraftTalk, Twin. ChatLabs, Botcreators.

signaler le commentaire

Williamidoms

06/09/2024 à 16h48 commentaire modifé

Рейтинг ТОП-20 https://chatbotrating.ru разработчиков чат-ботов для бизнеса: Chatme AI, Лия, AutoFAQ, Aimylogic, CraftTalk. Статьи по запуску и внедрению чат-ботов.

signaler le commentaire

Préc

Suiv

Ajoutez un commentaire :

AncrReert

06/09/2024 à 21h55 commentaire modifé

If a tumor develops in this area, it can produce all kinds of symptoms, regardless of whether the tumor is cancerous or non-cancerous. the best ways for men to lead rewarding sex lives in bed.End sildenafil dosage by weight by taking advantage of discounts However, in roughly one out of every four cases, the illness lasts up to two weeks.

signaler le commentaire

JesseRot

06/09/2024 à 20h48 commentaire modifé

vibration analysis The Value of Vibration Regulation Apparatus in Mechanical Systems Across manufacturing environments, machines along with spinning machinery serve as the support of output. However, one of the highly common problems that might obstruct the operation as well as longevity is vibrations. Resonance could lead to a series of challenges, such as lowered accuracy along with productivity resulting in greater damage, ultimately causing high-cost interruptions and restoration. Such a situation is where vibration control apparatus becomes essential. The Reason Vibration Management proves Critical Resonance within machines might lead to numerous adverse effects: Decreased Operational Effectiveness: Excessive vibration may lead to discrepancies as well as unbalance, lowering overall effectiveness in the devices. This can result in slower manufacturing speed and greater energy use. Elevated Erosion: Constant resonance accelerates the wear and tear in mechanical parts, resulting in more regular upkeep as well as an chance for unexpected issues. This not only raises operating costs but also reduces the durability of the existing equipment. Safety Risks: Uncontrolled resonance could present significant safety concerns to both the equipment and the machines as well as the operators. In extreme situations, severe cases, it may lead to devastating system collapse, jeopardizing workers and causing considerable destruction across the environment. Accuracy as well as Quality Issues: For fields which rely on high accuracy, such as manufacturing or aerospace, resonance can bring about flaws with the production process, causing flawed products along with increased waste. Affordable Options to Vibration Regulation Putting money in resonance control equipment remains not merely a necessity and a wise choice for all businesses that any company that uses machines. Our state-of-the-art vibration management systems are built to eliminate vibrations within any machine as well as spinning equipment, providing smooth along with efficient functioning. What sets these apparatus above the rest is its reasonable pricing. We know the necessity of cost-effectiveness in the competitive market of today, which is why we offer premium vibration regulation systems at rates that remain budget-friendly. Opting for these tools, you are not just protecting your mechanical systems as well as boosting its productivity but also putting investment into the long-term success in your organization. Conclusion Resonance mitigation is a vital element of maintaining the effectiveness, security, along with lifetime of your machinery. With our economical resonance mitigation apparatus, you can ensure that your processes operate seamlessly, your products maintain top quality, as well as your workers stay safe. Do not allow resonance jeopardize your operations—invest in the proper tools immediately.

Antoniocig

06/09/2024 à 19h53 commentaire modifé

Партнерский маркетинг https://moneymakemedia.com арбитраж трафика и партнерские программы - все это вы найдете на Money Make Media. Наш ресурс поможет вам зарабатывать в сети и быть в курсе последних новостей рынка.

StanleyMeD

06/09/2024 à 16h53 commentaire modifé

Сравнение ТОП-10 разработчиков чат-ботов https://chatbotmarket.ru в России: плюсы, технические возможности, кому подходят, клиенты. Chatme.ai, Just AI, AutoFAQ, Lia, CraftTalk, Twin. ChatLabs, Botcreators.

Williamidoms

06/09/2024 à 16h48 commentaire modifé

Рейтинг ТОП-20 https://chatbotrating.ru разработчиков чат-ботов для бизнеса: Chatme AI, Лия, AutoFAQ, Aimylogic, CraftTalk. Статьи по запуску и внедрению чат-ботов.