onreadystatechange

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 the first function which is executed first always? So if using jQuery if you have following code: $(document).ready(function(){ function1(); }); $(document).ready(function(){ function2(); }); Can it happen that function2 is executed first or will function1 always be executed first ? jQuery ready uses the Deferred object system : ready: function( fn ) { // Add the callback jQuery.ready.promise().done( fn ); return this; },