Learn XML for Ajax

XML stands for eXtensible Markup Language.XML is designed to transport and store data.XML is important to know, and very easy to learn.While Html was designed to display the data,so this is the difference between two languages.Before starting with XML you should already know Html and JavaScript.Now what is XML?XML stands for EXtensible Markup Language.XML is a markup language much like HTML.XML was designed to carry data, not to display data.XML tags are not predefined. You must define your own tags.XML is designed to be self-descriptive.XML is a W3C Recommendation.XML is not a replacement for HTML.XML and HTML were designed with different goals: XML was designed to transport and store data, with focus on what data is.HTML was designed to display data, with focus on how data looks.HTML is about displaying information, while XML is about carrying information.XML doesn’t do anything.Maybe it is a little hard to understand, but XML does not DO anything. XML was created to structure, store, and transport information.with XML we can invent our own tags.The tags in the example above are not defined in any XML standard. These tags are “invented” by the author of the XML document.That is because the XML language has no predefined tags.The tags used in HTML are predefined. HTML documents can only use tags defined in the HTML standard.XML allows the author to define his/her own tags and his/her own document structure.XML is a complement to HTML not a replacement.It is important to understand that XML is not a replacement for HTML. In most web applications, XML is used to transport data, while HTML is used to format and display the data.Xml is everywhere.XML is now as important for the Web as HTML was to the foundation of the Web.XML is the most common tool for data transmissions between all sorts of applications.XML is used in many aspects of web development, often to simplify data storage and sharing.XML is used in many aspects of web development, often to simplify data storage and sharing.XML is used in many aspects of web development, often to simplify data storage and sharing.XML is used in many aspects of web development, often to simplify data storage and sharing.XML is used in many aspects of web development, often to simplify data storage and sharing.If you need to display dynamic data in your HTML document, it will take a lot of work to edit the HTML each time the data changes.With XML, data can be stored in separate XML files. This way you can concentrate on using HTML for layout and display, and be sure that changes in the underlying data will not require any changes to the HTML.With a few lines of JavaScript code, you can read an external XML file and update the data content of your web page.Xml simplifies data sharing.XML data is stored in plain text format. This provides a software- and hardware-independent way of storing data.Exchanging data as XML greatly reduces this complexity, since the data can be read by different incompatible applications.

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