Require JS callback argument undefined

Question

First off, I'm pretty new to Require JS, and I haven't done my fair share of reading the docs. Kind of just shooting from the hip here.

But this is functionality that, should work. Well as far as I've read.

I have a hashed URL, say at this stage it's #index. And then I have the equivalent js page under /javascript/pages/index.js.

As you would figure, I'm trying to load these pages "dynamically". However, my callback functions page parameter is undefined.

require(['javascript/pages/' + page],
    function(page) {
        var constructedPage = new page();
    });

All Pages are "classes" function index(){}

In the meanwhile, I'll start reading up on the docs a bit more.

Well no, do I need to include a define call? The page I'm loading isn't a dependency of another. Nothing will depend on either of these pages. They're quite standalone. — Zander Rootman
– Zander Rootman, Commented Apr 10, 2015 at 14:32
If you want to refer to the object returned via new page() as in your example, you have to use define(). — Sirko
– Sirko, Commented Apr 10, 2015 at 14:38
Okay, I'll give it a go quick. Post an answer though, so I can vote it up :P — Zander Rootman
– Zander Rootman, Commented Apr 10, 2015 at 14:39

Sirko · Accepted Answer · 2015-04-10 14:42:07Z

1

If you want to use objects/variables/etc created in the index.js within the callback of require(), you have to use a define() call to specify that object.

index.js

define(function(){

  // create an object with constructor
  function myPage(){
  }

  // some more code adding to the prototype

  // return the actual object
  return myPage;

});

Then you can use that object like you did in your code.

Note: That define() call may have dependencies of its own. Omitted here for simplicity's sake.

answered Apr 10, 2015 at 14:42

Sirko

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