Call order of jQuery ready callback

Question

If have two javaScript functions in a page which are required to be called when document load is complete. Is is possible that any function can executed first or it will be

Answer 1

If you want these functions to be executed in order, why don't you just write:

$(document).ready(function(){ 
    function1();
    function2();
});

Answer 2

Better make use of callback function to be sure about the execution order of the functions

Answer 3

jQuery ready uses the Deferred object system :

ready: function( fn ) {
    // Add the callback
    jQuery.ready.promise().done( fn );

    return this;
},

(from the source code)

And the documentation states that

Callbacks are executed in the order they were added

So yes, your callbacks will be executed in order of addition.