What are the advantages of html5?

The advantages of html5 are reflected in: 1. Solving the cross-browser problem; 2. Adding multiple new features (new form controls, canvas elements for painting, media elements video and audio); 3. Better support for local offline storage; 4. Provide APIs such as geographical location, dragging, and camera; 5. The principle of user priority, etc.

The operating environment of this tutorial: Windows 7 system, HTML5 version, Dell G3 computer.

From HTML4.0, XHTML to HTML5, in a sense, this is a more standardized process of HTML descriptive markup language. Therefore, HTML5 has not brought much impact to developers. However, HTML5 has added many very practical new functions and features. Here are some of the advantages of HTML5.

1. Solve the cross-browser problem

Before HTML5, major browser manufacturers would add various features to their browsers in order to compete for market share. Various functions and no unified standards. Using different browsers, you often see different page effects. In HTML5, all reasonable extension functions are incorporated and have good cross-platform performance. For older IE browsers that don't support new tabs, simply add JavaScript code to use the new elements.

2. Many new features have been added

The HTML language has undergone tremendous changes from 1.0 to 5.0, from a single text display function to a multimedia display with pictures and texts. Functions, many features have been refined over the years, and it has developed into a very important markup language. The new features of HTML5 are as follows.

• New special content elements, such as header, nav, section, article, footer.

• New form controls, such as calendar, date, time, email, url, search.

• The canvas element used for painting.

• Video and audio elements for media playback.

• Better support for local offline storage.

• Geolocation, dragging, camera and other APIs.

3. The principle of user priority

The HTML5 standard was formulated based on the principle of user priority. Once an unresolved conflict is encountered, , the specification will put users first. In addition, in order to enhance the HTML5 user experience, the following two aspects of design have also been strengthened.

• Design of security mechanism

  In order to ensure the security of HTML5, a lot of security designs were made when designing HTML5. HTML5 introduces a new source-based security model that is not only easy to use, but also universal for different APIs (Application Programming Interface, application programming interface). Using this security model, secure conversations across domains can be conducted without resorting to any unsafe hacks.

• Separation of presentation and content

  Separation of presentation and content is another important content in HTML5 design. In fact, the separation of presentation and content has been designed as early as HTML4.0, but the separation is not complete. In order to avoid problems such as poor accessibility, high code complexity, and excessively large files, the HTML5 specification separates presentation and content in a more detailed and clear manner. However, considering the compatibility issues of HTML5, some old performance and content codes can still be used compatiblely.

4. Advantages of simplifying complexity

As a popular universal markup language, HTML5 is as simple as possible and strictly follows the " The principle of "simplicity first" is mainly reflected in these aspects:

• New simplified character set declaration;

• New simplified DOCTYPE;

• Simple and powerful HTML5 API;

• Replace complex JavaScript code with browser native capabilities. In order to achieve these simplified operations, the HTML5 specification needs to be more detailed and precise than before. In order to avoid misunderstandings, HTML5 has very clear specifications for every detail, and no ambiguity or ambiguity is allowed.

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