function returning dictionary - is 'new' needed or not?

Asked Sep 02 '16 at 12:19

Active Sep 02 '16 at 12:28

Viewed 48 times

considering:

function C() {
  var v=5;
  
  function getV() { return v; }
  
  return {
    getV: getV
   }
 }

var o1=new C();
alert(o1.getV());

var o2=C();
alert(o2.getV());

As both versions produce the same result

what is the difference between the version using new and the version that doesn't ?
is any version better ?

edited Sep 02 '16 at 12:28

asked Sep 02 '16 at 12:19

kofifus

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1

1 - yes there is a difference, 2 - better for what purpose? – Jaromanda X Sep 02 '16 at 12:21
what's the difference pls ? – kofifus Sep 02 '16 at 12:22
5

This question will help you out a lot: [what-is-the-new-keyword-in-javascript](http://stackoverflow.com/questions/1646698/what-is-the-new-keyword-in-javascript) – byxor Sep 02 '16 at 12:22
1

@BrandonIbbotson - champion, I was just beginning to look for an old answer – Jaromanda X Sep 02 '16 at 12:24
yes but in this case they do exactly the same ? – kofifus Sep 02 '16 at 12:26
1

@kofifus They **don't** do the same thing. But your output will be the same in this case. – byxor Sep 02 '16 at 12:27
well thx for not helping :( – kofifus Sep 02 '16 at 12:29
2

@kofifus ... I answered your question. What more do you want? – byxor Sep 02 '16 at 12:31
3

If you don't need to use `C.prototype` or `this` inside the function, then using `new` here may be misleading. Voting to close as duplicate - the other question has super comprehensive explanations. – Kos Sep 02 '16 at 12:31
Possible duplicate http://stackoverflow.com/questions/2709612/using-object-create-instead-of-new – Moulaye Abderrahmane Sep 02 '16 at 12:39
1

A more exact duplicate (with a direct answer): http://stackoverflow.com/questions/14747325/javascript-new-with-function-returning-self-defined-object?noredirect=1 – Ilmari Karonen Sep 02 '16 at 12:45

function returning dictionary - is 'new' needed or not?

0 Answers0