Question

I got a JavaScript source code, and I don not understand something in this. Could you help me please, what does it mean?

Partnerek = (function () {

    Partnerek = function () { }

    //there are functions in this way
    //I think this is a public function
    Partnerek.foo = function foo()
    {
      //code
    }

    //there are functions in this way
    //this is a non public function
     function foosecondway()
    {
      //code
    }

    return Partnerek;
})()

It seems like a class, but this is not a class.

1. What is this?
2. Why Did the programmer write in this way?
3. Is this a good way?
4. What is the return value?
5. Is the two function “Parameter” same in the code?

Answer 1

I’m not sure but to me it looks like it’s a class buildup, which executes itself. so if you would call

var test = new Partnerrek()

This variable will become an instance of this class(This is done by the return) and the constructor

Partnerek = function(){}

Will be called.