Question

How can I load a collection of page elements (EG. <div class="myClass">) from an external page into an array please?

Answer 1

Your question is very vague, but assuming you are using jQuery.get to fire an AJAX request to a remote page:

$.get("somePage.html", function(data) {
    var elems = $(data).filter(".myClass").get();
});

filter is used to reduce the elements of data to those matching the selector. get returns a normal array (rather than a jQuery object).