what's the difference between the object literal and the new Operator

[runeveryday]

i have read this on the interent"

 

 

function getArea(radius)

{

  // return the radius of our circle using the

  // PI attribute of the built-in Math object

  return (radius * radius) * Math.PI;

}

 

var circle = {

  radius : 9,

  getArea : getArea(this.radius)

};

Imagine we want to create lots of circle objects using our object as a base - if we’ve declared using the object literal, we’re not able to do that.

 

the new operator creates an instance of any built-in or user-defined object - basically allowing us to re-use a user-defined object.

 

can't understand on the above that we declare using the object literal not able to do that.

[Adam]

An 'object literal' (AKA JSON), allows you to write the object kind of in-line. You don't pre-define it like functions, which means you can't create multiple instances of it.