Question

Can I kindly ask for explanation:

What does the code below represent? Does it create a DndUpload Ojbect? Or, does it create a DndUpload() function? What I miss is the statement new normally present during JavaScript objects creation. Can I kindly ask for some explanation, as I am confused.

var DndUpload = function (inputElem)
{
    this.input = inputElem;
    this.dropZone = null;
    this.isDragging = false;
    this.init();
};

As far as I know this is the way to create object in Javascript:

var myObject = new function()
{
};

If you have any link with explanation, that would help. Thank you.

Answer 1

var myObject = new function()
{
};

Defines an anonymous constructor function and then instantiates a new object using the anonymous constructor function. It could have been replaced with var myObject = {}.

var DndUpload = function (inputElem)
{
    this.input = inputElem;
    this.dropZone = null;
    this.isDragging = false;
    this.init();
};

Defines a constructor function (technically an anonymous constructor function assigned to a variable). You can then create objects of this “class” by invoking the constructor function with new:

var dndUploadObject = new DnDUpload(),
    anotherUploadObject = new DnDUpload(); //2 unique DnDUpload objects