JavaScript /jQuery variable scope causing errors

Question

I have a really simple snippet of code and a really (probably) simple change I need to make.

I can't access a variable that I need to in my jQuery script:

var Objects; // Used to store stuff
enable_reordering();

function enable_reordering()
{
    $('a.move-object').click(function(){

          Objects.moveMe = $(this);
          $('#image-title').text( $(Objects.moveMe).attr('data-child-title') );
          return false;
    });
}

When I try to change the value of Objects.moveMe to anything, my browser moans that Objects is not set. (Error: Objects is undefined).

How can I make it so that I can use variables in and out of functions throughout my entire script?

---

Update:

The error is caused by the line

$('#image-title').text( $(Objects.moveMe).attr('data-child-title') );

where I first try and use the variable.

Answer 1

try: http://jsbin.com/ocodoz/

var a;
alert(a);

a === undefined But declared in the current scope..

Your Object have to be set to an object

var Objects = {};

Answer 2

It's not a scope issue. The problem is that, as the error says, Objects is undefined. It looks like you want to set a property of it, so initialize it as an object literal:

var Objects = {};

Currently, what you are trying to do is effectively:

undefined.moveMe = $(this);

When you declare a variable, its value is undefined until you assign some other value to it. By assigning an empty object literal to it, you can then set properties of that object.