hoge.js

var defer1 = new $.Deferred(),
    defer2 = new $.Deferred();

// ready
$(function(){
    defer1.resolve();
});

// load
window.onload = function(){
    defer2.resolve();
};

// 全部ｵﾜﾀ
$.when(defer1, defer2).done(function(res1, res2){
    // もろもろ
});