html5 is a language for building what

HTML5 is a language for building web content. HTML5 is the specification of the core language HTML in the Web. The content that users see when browsing the web using any means is originally in HTML format. It is converted into identifiable web information through some technical processing in the browser.

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

The full English name of HTML is Hyper Text Markup Language, which is Hypertext Markup Language. HTML5 is a new version of HTML. HTML is not a programming language, but a markup language.

HTML5 is the fifth major revision of Hypertext Markup Language (HTML), an application under Standard Universal Markup Language, the core language of the World Wide Web.

HTML5 is a language description method for constructing web content. HTML5 is the next generation standard of the Internet and a language method for constructing and presenting Internet content. It is considered to be one of the core technologies of the Internet. HTML was created in 1990, and HTML4 became an Internet standard in 1997 and is widely used in the development of Internet applications.

HTML5 is the specification of the core language HTML in the Web. The content that users see when browsing the web using any means is originally in HTML format. It is converted into a recognizable format through some technical processing in the browser. Information. HTML5 has made certain improvements on the basis of the previous HTML4.01. Although technical personnel may not put these new technologies into application during the development process, website development technical personnel must be aware of the new features of this technology. understand.

HTML5 technology combines and innovates the relevant standards of HTML4.01 to meet the requirements of modern network development and was officially released in 2008. HTML5 is made up of different technologies and is widely used on the Internet to provide more standard machines for enhanced web applications. Compared with traditional technologies, HTML5's grammatical features are more obvious and combined with the content of SVG. The use of these contents in web pages can make it easier to process multimedia content, and HTML5 also incorporates other elements to adjust and modify the original functions and standardize them. HTML5 reached a stable version in 2012.

Some interesting new features in HTML5:

• The canvas element for painting.

• Video and audio elements for media playback

• Better support for local offline storage.

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

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

The advantages and disadvantages of Html5 can be summarized as follows:

Advantages:

a. Unified network standards, HTML5 itself is Recommended by W3C.

b, multiple devices, cross-platform

c, instant updates.

d. Improve usability and improve user-friendly experience;

e. There are several new tags that will help developers define important content;

f. Can bring more multimedia elements (video and audio) to the site;

g, can be a good substitute for Flash and Silverlight;

h, involves website crawling and When indexed, it is very friendly to SEO;

i, is widely used in mobile applications and games.

Disadvantages:

a. Security: There are serious security issues in the previous implementation of Firefox 4’s web socket and transparent proxy. At the same time, functions such as web storage and web socket are easily exploited by hackers. to steal user information and data.

b. Completeness: Many features are supported by different browsers.

c. Technical threshold: While HTML5 simplifies the work of developers, it also means that there are many new attributes and APIs that developers need to learn, such as new features such as web worker, web socket, web storage, background and even browser principles. knowledge, opportunities but also huge challenges

d. Performance: Engine problems on some platforms lead to low performance of HTML5.

e. Browser compatibility: The biggest shortcoming is that browsers below IE9 are almost completely wiped out.

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