What are XML and HTML? What are the differences?

XML is a source language that allows users to define their own markup language; HTML is a language that uses markup to describe the structure and presentation of documents. Differences: 1. HTML is mainly used for data display, users cannot customize tags, while XML is used for data transmission, and users can customize tags; 2. HTML is a language written for browsers, while XML can be used across Platform for information exchange; 3. Some HTML tags may not have end tags, but XML syntax is very strict, tags must be symmetrical, and there must be an end if there is a beginning.

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

XML

Extensible Markup Language, which can be used to mark data and define data types, is a source language that allows users to define their own markup language. . It is ideally suited to the transport of the World Wide Web, providing a unified method to describe and exchange structured data independent of applications or vendors.

HTML

Hypertext Markup Language is the description language of WWW. It includes a series of tags. These tags can unify the document format on the network and connect scattered Internet resources into a logical whole. HTML text is descriptive text composed of HTML commands. HTML commands can describe text, graphics, animations, sounds, tables, links, etc.

So what does hypertext mean? Hypertext: Pages can contain pictures, links, and even non-text elements such as music and programs. Let’s recall what the role of HTML is in the project. 1. What is certain without thinking is its display function. 2. For any element on the page, we can use JS to make some animation changes to it, whether it is a change in display or a link to other places. In other words, the elements in HTML can be imagined as a portal. With just a click of the mouse, we may get more relevant content. Okay, now imagine that an HTML page is a node, connected to two HTML pages through some kind of trigger. In this way, tens of thousands of HTML pages constitute our World Wide Web.

Similarities

Both are markup languages

Have similar syntax, both are in the format of <>

Differences

HTML is mainly used for data display; XML is used for data transmission

HTML users cannot customize tags, and tags are pre-set defined; XML is more flexible because it is a language without tag sets and language rules. Users can customize it.

HTML is a language written for browsers, while XML can exchange information across platforms.

Some HTML tags may not end with ; XML syntax is very strict and must be symmetrical. Where there is a beginning, there must be an end.

[Recommended tutorial: "html video Tutorial》】

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