Whats wrong with my JavaScript architecture (YUI3)?

I am writing a web application which uses YUI3 for all it's JS needs. I need functionality such as Tooltips, Tooltips whose content is determined by AJAX queries, Toggle Buttons and so on.

I was not sure who to build an architecture to achieve all this. I have taken the following approach

var Myapp = function(){

    this.toggleButton(node,config)
    {
        YUI().use开发者_开发知识库(....,function(Y){
            //code to convert NODE into a toggle button;

        });
    }
    return this;
};

In my application I then just convert all the buttons into toggle buttons by calling

var app = Myapp(); 
app.toggleButton(Y.all('.toggle-buttons'),{'text1':'TOGGLE_ME','text2':'TOGGLED_ME'});

All this works. But I wanted to know from more experienced developers if there is anything fundamentally wrong with this approach.

Is this a good way to use JavaScript ?

---

return this;

This is unneccesary since function constructors return this by default.

var app = Myapp();

You forgot to call new Myapp() without the new keyword this will be the window object and you are effectively writing to global scope.

---

There's a fundamental problem in your code:

var MyApp = function(){

    this.toggleButton(node,config)
    {
     ...

You're not defining a function for MyApp. Instead, you try to invoke toggleButton each time you instantiate it. It should fail because the function is undefined

---

In your case, Class definition and instantiation is not needed because MyApp is being used as a utility.

You can define MyApp as a static Object:

var MyApp = {
    toggleButton: function toggleButton() {
        // your code
    }
};

And you can use it anywhere by:

MyApp.toggleButton();