jQuery addressable AJAX/HTML fragments

jaahf.js

$.ajax({
 url: "/some_path/foo.php", /* a url that returns a fragment of html */
 dataType: "html", /* ask for and expect html */
 success: function(html){

   var $fragment = $("<div/>") /* make a fragment (createDocumentFragment() won't work) */
            .html(html) /* put the html into the div so we can get at stuff in jQuery */
            .find("#some_id"); /* we can now .find() things! */

  /* if there's a <span id="some_id" data-foo="bar"></span> in out returned html, then... */
  console.log($fragment.data("foo")); /* ...logs "bar" */
 }
});