Any problem in using native jquery ajax style instead of using admin-ajax.php?

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I had problem using admin-ajax.php while creating one plugin. I had problem using
“add_action( ‘wp_ajax_ajax_action’, ‘ajax_action_stuff’ )” in my plugin where i have used oop module. So I want to go with jquery native way like below : 

$.ajax({
  url: "test.html",
  context: document.body,
  success: function(){
    $(this).addClass("done");
  }
});

WordPress recommend to use admin-ajax.php for handeling ajax request. Is there any specific reason. Will i encounter any problem if go with native jquery ajax way.

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2 comments

  1. I’ve used this method in quite a few applications until I found out about using admin-ajax.php, so pretty much simply put, no, I don’t think it will cause any problems.

    Although I do recommend using the method that WordPress describes! In my opinion it is much easier and works nearly the same (or better) as the method you are describing.

  2. There are a few reasons i can think of but the two most important would be:

    1. Data Security, take a look at this answer
    2. The use of WordPress functions inside you ajax php callback.

    And as for using ajax with OOP development you can hook you callback function just like you normally would but add array with instance to the callback parameter, for example:

    add_action( 'wp_ajax_ajax_action', 'ajax_action_stuff');

    inside a class becomes

    add_action( 'wp_ajax_ajax_action', array($this,'ajax_action_stuff' ));