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JSON vs XML

Both JSON and XML can be used to receive data from a web server

 JSON is Like XML Because

  • Both JSON and XML are "self describing" (human readable)
  • Both JSON and XML are hierarchical (values within values)
  • Both JSON and XML can be parsed and used by lots of programming languages
  • Both JSON and XML can be fetched with an XMLHttpRequest

    • JSON is Unlike XML Because

  • JSON doesn't use end tag
  • JSON is shorter
  • JSON is quicker to read and write
  • JSON can use arrays

    • The biggest difference is:

     XML has to be parsed with an XML parser. JSON can be parsed by a standard JavaScript function.

    Why JSON is Better Than XML

    XML is much more difficult to parse than JSON.
    JSON is parsed into a ready-to-use JavaScript object.

    For AJAX applications, JSON is faster and easier than XML:

    Using XML

  • Fetch an XML document
  • Use the XML DOM to loop through the document
  • Extract values and store in variables

    • Using JSON

  • Fetch a JSON string
  • JSON.Parse the JSON string

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