XML DOM

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“XML DOM Interview Questions and Answers will guide us now that the XML DOM is a W3C (World Wide Web Consortium) standard. The DOM defines a standard for accessing documents like XML and HTML, The W3C Document Object Model (DOM) is a platform and language-neutral interface that allows programs and scripts to dynamically access and update the content, structure, and style of a document, so learn XML DOM by this XML DOM Interview Questions with Answers guide”



26 XML DOM Questions And Answers

21⟩ Define XMLHttpRequest Object?

The XMLHttpRequest object is used to connect to the server through http. Scripts use it to do so programmatically.

The EventTarget interface needs to be implemented if an object implements the XMLHttpRequest interface. Also, an XMLHttpRequest() constructor needs to be provided by objects that implement the Window interface.

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22⟩ List the features of DOM?

DOM is Document Object Model. It is used to read data from a XML document. It is more commonly used in applications where data in the document needs to be repeated accessed. DOM supports navigation in any direction. XML DOM is typically used for XML documents. The DOM defines the objects and properties of all document elements, and the methods (interface) to access them.

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23⟩ Define HTML DOM?

The HTML DOM API specializes and adds the functionality to relate to HTML documents and elements. It addresses the issues of backwards compatibility with the Level 0 of DOM and provides mechanisms for common and frequent operations on HTML documents.

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24⟩ Explain the difference between DOM and SAX?

SAX parser works incrementally and generates events that are passed to the application. DOM parser reads the whole XML document and returns a DOM tree representation of xml document

In DOM the xml file is arranged as a tree and backward and forward search is possible In SAX traversing in any direction is not possible as Top to bottom approach is used.

SAX is essentially an API for reading XML, and not writing it. DOM allows you to read and write.

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25⟩ Where the Document Object Model (DOM) is used?

Document Object Model (DOM) is used to query, traverse and manipulate documents like XML or HTML documents. DOM is best suited where the document must be accessed repeatedly or out of sequence order. DOM allows accessing the contents of a web page. It also allows dealing with events that allows capturing and responding to user's actions. There are different levels of DOM standards depending on the compatibility of the browsers.

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26⟩ Define DOM?

DOM is a platform independent, World Wide Web Consortium (W3C) standard form of representation of structured documents as an object-oriented model. It is an application programming interface so as to access HTML and XML documents.

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