Javascript function calling

Question

I'm declaring an object "Members" in my app global variable:

var MyShulApp = MyShulApp || {}; 
MyShulApp.Members = (function () {
 function Members() {
 }
 Members.prototype.getMembersList = function () {
 var list = [{ name: "john", age: 90 }, { name: "kaly", age: 90 }, { name: "steve", age: 90}];
 return list;
 }
 return Members;
})

I want to be able to call getMembersList(), so i do this:

var lst = oMembers.getMembersList();

but it's not working and I get undefined.

This works:

var membersList = oMembers.prototype.getMembersList();

What am I doing wrong?

EDIT(picture added): enter image description here

• maerics: How is oMembers defined?
• Grundy: you need call your anonymouse function
• maerics: @Grundy: post that as the answer!
• Grundy: @maerics Oriol already post it :-) i'm so sloooow :-)
• Itay.B: i added a picture showing the debugger.

Answer 1

I don't know what is oMembers.

But my guess is that you wanted to use a self-executing function:

var MyShulApp = MyShulApp || {}; 
MyShulApp.Members = (function () {
 function Members() {}
 Members.prototype.getMembersList = function () {
 var list = [{ name: "john", age: 90 }, { name: "kaly", age: 90 }, { name: "steve", age: 90}];
 return list;
 }
 return Members;
})();

Note I added the () at the end, to execute the function.

But you don't need that, you could just use

var MyShulApp = MyShulApp || {}; 
MyShulApp.Members = function Members() {};
MyShulApp.Members.prototype.getMembersList = function () {
 var list = [{ name: "john", age: 90 }, { name: "kaly", age: 90 }, { name: "steve", age: 90}];
 return list;
};

Answer 2

You must first create an instance of that object:

function Members() {
}
Members.prototype.getMembersList = function () {
 var list = [{ name: "john", age: 90 }, { name: "kaly", age: 90 }, { name: "steve", age: 90}];
 return list;
}
var oMembers = new Members('Male');

To read more about this head to: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Introduction_to_Object-Oriented_JavaScript