Comment ajouter du contexte à HTML5 pour l’accessibilité ?

Context is vital because it gives meaning and clarity to information, facilitates effective communication, influences decision-making, and helps us understand complex situations. It plays a role in everything from problem-solving to cultural sensitivity, historical understanding, legal matters, scientific research, social interactions, memory, and emotional intelligence

Header (<header>): Place at the top, containing logos and navigation. Nav (<nav>): Wraps navigation links. Main (<main>): Holds the primary content. Article (<article>): For self-contained content like blog posts. Section (<section>): Groups related content within <main>. Aside (<aside>): For secondary content, often in <article> or <section>. Footer (<footer>): At the bottom, contains copyright, contact, or links. Figure (<figure>), Figcaption (<figcaption>): For images with captions. Time (<time>): Represents dates or times. Mark (<mark>): Highlights text for emphasis.

Improve readability and navigation with HTML5 semantic elements. Add context to HTML5 with semantic elements. Help users identify and understand web page structure. - Use <header>, <nav>, <main>, <article>, <section>, <footer>, and more. - Assistive technologies can identify different parts of your web page. - <nav> indicates navigation menu for links to other pages. - <main> indicates main content for user focus. - Semantic elements create a clear and logical outline. - Improve readability and navigation on your web page. Enhance readability and navigation with HTML5 semantic elements.

HTML5 ARIA (Accessible Rich Internet Applications) attributes enhance web accessibility. Roles, e.g., role="navigation", clarify element functions. Use aria-label for brief names, aria-labelledby to reference an element's ID for labeling, and aria-describedby for additional info. Indicate status with aria-disabled, aria-checked, aria-selected. For live updates, use aria-live, aria-atomic, and aria-relevant. Control tab order with tabindex, set keyboard shortcuts with aria-keyshortcuts. Improve widgets (e.g., sliders, dialogs) for accessibility. Prioritize standard HTML elements, supplement with ARIA when necessary, following ARIA Authoring Practices for web accessibility.

Content Identification: Identify the web content to mark up, like products, events, or reviews. itemscope Attribute: Wrap the content with itemscope to establish its scope. itemtype Attribute: Specify the data type using itemtype, often from vocabularies like Schema.org. itemprop Attributes: Within itemscope, use itemprop to define specific properties and their values. Validation: Use tools like Google's Structured Data Testing Tool to ensure correctness. Implementation: Add the microdata to your webpages for search engines to understand and present richer results. By using microdata, you enhance your content's visibility and search engine understanding, providing more informative search results for users.

Choose <audio> for audio and <video> for video content. Specify media sources with <source> tags, offering various formats for compatibility. Add controls for user-friendly playback options. Incorporate <track> for captions/subtitles. Use autoplay for auto playback (if needed). Implement responsive sizing with CSS. Enable JavaScript for dynamic control. Thoroughly test on different browsers/devices. Ensure accessibility with alt text and screen reader compatibility.