Question

Does jQuery create a script node in the DOM setting the source equal to the request and then remove the script node?

I was debugging it in firebug and I never noticed an any extra script nodes ever being added. Wondering how jQuery handles this?

E.g.

$(document).ready(
    function(){
        $.ajax({
          url: "...",
          type: 'GET',
          dataType: 'jsonp'
        });
    }
);

Answer 1

Take a look at the source of the jQuery.ajaxTransport function in the jQuery source. it returns an object with a send element containing a function that adds the script to the DOM. This script element has an onload and onreadystate change handler that removes itself from the DOM.