Different between ajax & json

 

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  • Abort Ajax requests using jQuery 18 answers

    • check link

    please read details on internet by quick google search.

    I think you did not search on google or wikipedia.

    Take a look at: 

    http://en.wikipedia.org/wiki/Ajax_(programming)
http://en.wikipedia.org/wiki/JSON

    Copyed :

    AJAX stands for Asynchronous Javascript and XML, which is a mechanism used to launch asynchronous HTTP requests to a server using JavaScript. Don't let the name fool you; there's no restriction on you only retrieving JavaScript or XML from this technique. You can quite happily return other data formats as well (HTML, plain text and JSON, to list a few).

    JSON is just one of these formats. It's a data interchange format, where-as AJAX is a technique to communicate with a server after the initate page load has completed.

    To answer your question on whether you need to specify the dataType; jQuery will best guess the response format (be it HTML or JSON etc), so you're usually fine to omit it

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