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HTML

Sébastien Merour
publié le 13/06/2020 à 15h46 | modifé le 13/06/2020 à 19h00
Catégorie : LangagesCommentaires (7766)
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.

7766 Commentaire(s)
  1. user
    WalterFep
    09/07/2025 à 00h46  commentaire modifé
    Greetings! We have the honor to propose modern solution for dynamic balancing of rotating mechanisms - portable balancing device Balanset-1A. Official product page: https://vibromera.eu/shop/889/ Professional vibration analysis set Application Areas Balanset-1A is successfully operated for imbalance elimination of various types rotating equipment: Industrial Machinery: Ventilation Systems - manufacturing, supply, duct. Pumping Equipment - centrifugal, chemical. Motors - asynchronous. Turbo Units - gas. Compression Equipment - centrifugal. Machine Tools: Spindle Units - milling. Grinding Wheels. Shafts of rolling mills. Agricultural Machinery: Combine Rotors. Rotary Mowers. Grinding Equipment for fertilizers. Special Applications: Centrifuges - laboratory. Blowers. Grinding Equipment. Transmission Shafts. Rotor balancing in field conditions Technical Parameters Main Parameters: Correction planes: 1-2. Operating speed range: 200 to 15,000 revolutions per minute. Phase determination accuracy: ±1°. Vibration measurement precision: ±5%. Measurement channels: 2. Vibration measurement limits: 0.1 to 300 mm/s. Power source: From computer USB port. Total weight: 4 kg. System Capabilities: Automated computation of correction masses. Database of operations. Standards determination according to ISO 1940. Spectral analysis of vibration. Graphical display in diagram form. Split-weight calculator. Index balancing of mandrels. Package Contents Standard Configuration: USB measurement module (1 pc.) - delivers measurement control between hardware and software. Accelerometers (2 pcs.) - Output signal: 100 mV/g. Frequency range: 0.5-10,000 Hz. Installation: magnetic base. Professional vibration transducer Laser phase sensor (1 pc.) - Working range: up to 1.5 m. Remote sensing for safe operation. Laser tachometer MS2234 Magnetic stand for phase sensor (1 pc.) - Magnetic strength: 60 kgf. Adjustable positioning for optimal alignment. Professional magnetic stand Digital scales up to 500 g (1 pc.) - Accuracy: 0.01 g. Essential for accurate mass determination. Program Balanset-1A - User-friendly interface. PC-based. International versions. Balanset software interface Protective case (1 pc.) - Durable construction. Cushioned interior for secure storage. Technical documentation - Comprehensive guide. Clear methodology. Connection cables - Durable shielded cables. Strong Points of Balanset-1A Technical Advantages: ? High Accuracy - Advanced methods of signal processing guarantee reliable results. ? Compactness - Easy transportation facilitates in-place adjustment without removal. ? Wide Capabilities - Applicable to various rotors from small fans to massive shafts. ? Ease of Use - Intuitive interface bypasses special training. Professional vibration diagnostics Economic Advantages: ? Cost Reduction on maintenance through preventive maintenance - 50-80% of emergency repairs. ? Equipment Life Extension by 50-200% - vibration-free operation lasts longer. ? Power Savings by 5-15% - smooth operation operate efficiently. ? Quick Payback - from 3 to 12 months depending on operational scale. Service Available to you: Personnel Training - comprehensive sessions online. Certification program includes all aspects. Expert Assistance - 24/7 assistance. Email support for rapid response. Metrological Support - regular certification to ensure precision. Temporary Use - suitable for one-time projects. Monthly hire periods available. Professional vibration analysis Price Information Actual Prices: Balanset-1A Portable Balancer & Vibration Analyzer: €1,751.00 Balanset-1A OEM Version: €1,561.00 Additional Vibration Sensor: €90.00 Optical Sensor (Laser Tachometer): €124.00 Magnetic Stand 60 kgf: €46.00 Reflective Tape: €10.00 Advanced diagnostic system Shipping Conditions: Delivery time: 3-5 business days. Guarantee period: 24 months full warranty. Settlement: negotiable. Shipping: to any country via express delivery. Our Advantages Official Supplier - factory warranty with comprehensive backup. Qualified Personnel with years of expertise in rotor balancing. Complete Service Cycle - from delivery to service and skill development. Stock Availability - fast shipment for standard items. Individual Approach for long-term cooperation including volume discounts. Professional balancing kit Best regards, Balancing specialists team P.S. Request a demonstration of the equipment today and take advantage of offers!

  2. user
    центрофинанс
    09/07/2025 à 00h17  commentaire modifé
    Не упустите возможность получить центрофинанс на карту быстро и удобно! Малые займы становятся актуальными для большого числа людей. Множество заемщиков предпочитает именно такой способ решения денежных вопросов. Важной причиной популярности является удобство оформления. В большинстве случаев процесс занимает всего несколько минут. Такой подход особенно важен для людей, находящихся в сложной финансовой ситуации. Другой важный аспект — это минимальные требования к заемщику. Нередко учреждения готовы выдать займ без справок о заработной плате. Это дает возможность обратиться за займом даже тем, кто работает неофициально. Тем не менее, стоит помнить о рисках. Важно тщательно выбирать кредитора. Рынок микрофинансовых организаций достаточно велик. Некоторые из них могут предлагать невыгодные условия. Поэтому стоит читать отзывы и изучать условия заранее. Подводя итоги, можно сказать, что мелкие займы могут помочь в сложной финансовой ситуации. Однако необходимо подходить к ним с осторожностью. Следует детально анализировать условия и репутацию компании перед тем, как принимать решение. Таким образом, вы сможете избежать неприятных ситуаций.

  3. user
    WalterFep
    08/07/2025 à 23h41  commentaire modifé
    Dear Colleagues! We are pleased to offer innovative solution for vibration adjustment of rotating mechanisms - portable balancing device Balanset-1A. Official product page: https://vibromera.eu/shop/889/ Complete Balanset-1A kit Application Areas Balanset-1A is successfully operated for vibration adjustment of various types rotor units: Production Mechanisms: Fans - production, supply, radial. Pumps - centrifugal, water. Motors - DC motors. Turbo Units - hydraulic. Compressors - piston. Processing Equipment: Tool Spindles - grinding. Abrasive Wheels. Roll Equipment of rolling mills. Agro Equipment: Combine Rotors. Rotary Mowers. Grinding Equipment for grain. Special Equipment: Centrifuges - medical. Blowing Machines. Mills. Transmission Shafts. Agricultural machinery diagnostics Technical Parameters Main Parameters: Balancing planes: 1-2. Operating speed range: 200 to 15,000 revolutions per minute. Phase measurement accuracy: ±1°. Vibration measurement accuracy: ±5%. Measuring channels: 2. Measured vibration velocity: 0.1 to 300 mm/s. Power source: USB powered. Kit weight: 4 kg. Functionality: Automated computation of balancing weights. Results archiving of operations. Permissible values computation according to ISO 1940. Frequency analysis of vibration. Graphics in real time. Split-weight calculator. Eccentricity compensation of mandrels. Supply Composition Standard Configuration: USB measurement module (1 pc.) - provides measurement control between measurement system and PC. Vibration transducers (2 pcs.) - Sensitivity: 100 mV/g. Operating frequencies: 0.5-10,000 Hz. Installation: threaded stud. Accelerometer with magnetic base Speed sensor (1 pc.) - Distance: up to 1.5 m. Non-contact measurement for maximum safety. Laser tachometer MS2234 Magnetic stand for phase sensor (1 pc.) - Magnetic strength: 60 kgf. Variable angles for best measurement. Adjustable sensor mount Precision scales up to 500 g (1 pc.) - Resolution: 0.01 g. Essential for accurate mass determination. Balancing software Balanset-1A - Intuitive operation. Windows compatible. Multilingual interface. Balanset software interface Transport case (1 pc.) - Heavy-duty build. Cushioned interior for safe transport. Technical documentation - Comprehensive guide. Clear methodology. Connection cables - Reliable noise-resistant wiring. Advantages of Balanset-1A Engineering Strengths: ? High Accuracy - Advanced methods of data analysis guarantee reliable results. ? Mobility - Easy transportation allows on-site balancing without removal. ? Multi-functionality - Applicable to various rotors from miniature spindles to large turbines. ? Ease of Use - Intuitive interface bypasses lengthy education. Precision rotor balancing process Financial Benefits: ? Cost Reduction on repairs through failure prevention - significant reduction of unplanned downtime. ? Durability Enhancement by 50-200% - balanced equipment requires less maintenance. ? Power Savings by 5-15% - reduced friction operate efficiently. ? Short ROI Period - from 3 to 12 months depending on operational scale. Support Available to you: Specialist Preparation - theoretical sessions at your site. Advanced training encompasses full procedures. Consultations - 24/7 help. Phone consultations for quick problem solving. Certification - annual calibration to guarantee reliability. Equipment Rental - perfect for one-time projects. Daily rental options available. Professional vibration analysis Price Information Current Pricing: Balanset-1A Portable Balancer & Vibration Analyzer: €1,751.00 Balanset-1A OEM Version: €1,561.00 Additional Vibration Sensor: €90.00 Optical Sensor (Laser Tachometer): €124.00 Magnetic Stand 60 kgf: €46.00 Reflective Tape: €10.00 Professional balancing equipment Shipping Conditions: Shipping period: from 3 days. Warranty: 24 months complete protection. Settlement: 100% prepayment. Shipping: international shipping via courier service. Why We Stand Out Authorized Dealer - original equipment with full support. Qualified Personnel with deep knowledge in rotor balancing. Full Service - from supply to maintenance and education. Warehouse Inventory - minimal lead time for popular models. Flexible Terms for long-term cooperation including volume discounts. Professional balancing kit At your service, Balancing specialists team P.S. Ask for presentation of the equipment right now and take advantage of offers!

  4. user
    sweet_bonanza_vfEt
    08/07/2025 à 23h35  commentaire modifé
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  5. user
    WalterFep
    08/07/2025 à 21h56  commentaire modifé
    Greetings! We are pleased to offer innovative equipment for imbalance elimination of rotating mechanisms - portable balancing device Balanset-1A. Official product page: https://vibromera.eu/shop/889/ Complete Balanset-1A kit Where It's Applied Balanset-1A is successfully operated for balancing of all sorts of rotating mechanisms: Industrial Equipment: Ventilation Units - industrial, supply, duct. Pump Units - screw, oil. Motors - asynchronous. Turbine Units - steam. Compression Equipment - screw. Machine Tools: Spindle Units - milling. Grinding Wheels. Shafts of rolling mills. Agro Equipment: Choppers. Rotary Mowers. Crushers for fertilizers. Special Applications: Separators - industrial. Blowers. Milling Units. Cardan Shafts. Agricultural machinery diagnostics Specifications Primary Indicators: Correction planes: One or two. Frequency range: 200 to 15,000 RPM. Phase determination accuracy: ±1°. Vibration measurement accuracy: ±5%. Measurement channels: 2. Measured vibration velocity: 0.1 to 300 mm/s. Power supply: From computer USB port. Kit weight: 4 kg. Functional Capabilities: Automated computation of compensating masses. Data storage of operations. Standards determination according to ISO 1940. FFT analysis of vibration. Data visualization in polar coordinates. Split weight calculation. Eccentricity compensation of mandrels. Supply Composition Main Delivery: USB interface unit (1 pc.) - delivers data transfer between hardware and software. Accelerometers (2 pcs.) - Sensitivity: 100 mV/g. Operating frequencies: 0.5-10,000 Hz. Attachment: magnetic base. Vibration sensor with cable Laser phase sensor (1 pc.) - Distance: up to 1.5 m. Remote sensing for safe operation. Optical speed measurement device Magnetic stand for phase sensor (1 pc.) - Holding force: 60 kgf. Adjustable positioning for optimal alignment. INSIZE magnetic base Digital scales up to 500 g (1 pc.) - Resolution: 0.01 g. Required for precise weight measurement. Program Balanset-1A - Easy-to-use design. Computer software. Multilingual interface. Balanset software interface Protective case (1 pc.) - Robust design. Cushioned interior for secure storage. Technical documentation - Full documentation. Clear methodology. Cable set - Reliable noise-resistant wiring. Benefits of Balanset-1A Technical Benefits: ? Accurate Results - Innovative technologies of data analysis provide reliable results. ? Compactness - Easy transportation facilitates in-place adjustment without disassembly. ? Versatility - Suitable for various rotors from miniature spindles to large turbines. ? Ease of Use - Intuitive interface eliminates need for lengthy education. Professional vibration diagnostics Economic Effect: ? Savings on operation through preventive maintenance - significant reduction of unplanned downtime. ? Service Life Increase by 50-200% - properly maintained rotors operates reliably. ? Energy Consumption Reduction by 5-15% - balanced rotors consume less power. ? Fast Investment Return - from 3 to 12 months depending on application frequency. Service Available to you: Operator Training - practical sessions in our facility. Advanced training encompasses complete methodology. Consultations - on-site help. Email support for rapid response. Metrological Support - regular certification to ensure precision. Device Leasing - ideal for one-time projects. Monthly lease terms available. Professional vibration analysis Commercial Terms Current Pricing: Balanset-1A Portable Balancer & Vibration Analyzer: €1,751.00 Balanset-1A OEM Version: €1,561.00 Additional Vibration Sensor: €90.00 Optical Sensor (Laser Tachometer): €124.00 Magnetic Stand 60 kgf: €46.00 Reflective Tape: €10.00 Professional balancing equipment Delivery Terms: Delivery time: from 3 days. Guarantee period: 24 months comprehensive coverage. Settlement: 50/50. Transportation: international shipping via courier service. Our Advantages Official Supplier - factory warranty with complete service. Expert Engineers with years of expertise in rotor balancing. Full Service - from sales to service and skill development. Ready Stock - minimal lead time for popular models. Flexible Terms for long-term cooperation including special pricing. Professional balancing kit Best regards, Professional experts group P.S. Ask for presentation of the equipment today and take advantage of offers!

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