Скачать или смотреть HTML4 vs HTML5 | HTML Course for Beginners

Doctype Declaration
HTML4 uses a very long and complex !DOCTYPE declaration, which can be confusing.

HTML5 simplified this by using just !DOCTYPE html, which is easier to remember and write.

3. Multimedia Support
HTML4 does not support audio and video tags directly. Developers had to rely on plugins like Adobe Flash.

HTML5 provides built-in support for multimedia using audio and video tags, making it much easier to embed media.

4. Semantic Elements
HTML4 mostly uses div and span for layout, which are non-semantic (they don’t tell the browser what the content means).

HTML5 introduced semantic tags like header, footer, article, section, nav, which improve code readability and SEO.

5. Form Enhancements
HTML4 has only basic form controls like text, password, and checkbox.

HTML5 added new input types like email, date, time, url, and range, which provide better validation and user experience.

6. Graphics and Animation
HTML4 doesn't support graphics natively.

HTML5 includes the canvas element and supports SVG (Scalable Vector Graphics), which are useful for drawing graphics, charts, and animations.

7. APIs Support
HTML4 has no support for APIs.

HTML5 includes several built-in APIs such as:

Geolocation API (to get user location)

Web Storage API (to store data in the browser)

Web Sockets (for real-time communication)

Drag and Drop API

8. Mobile and Responsive Design
HTML4 was not designed with mobile devices in mind.

HTML5 is optimized for mobile-first development and supports responsive design with better performance on smartphones and tablets.

9. Error Handling
HTML4 handles errors inconsistently across different browsers.

HTML5 provides better and more consistent error handling, making development and debugging easier.

10. Browser Support
HTML4 is supported by older browsers.

HTML5 is supported by all modern browsers like Chrome, Firefox, Edge, Safari, and mobile browsers.


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