How to access a variable within a function

Question

How do I access a variable that is defined within a function like this:

var functionVar = function(){
  this.var = 1;
}

console.log(functionVar().var); //MH - obviously this doesn't work, but I'm looking for the command that will log that variable

"functionVar.var" doesn't work ? Why adding parenthesis to a variable ? — Ricola3D
– Ricola3D, Commented Aug 9, 2012 at 14:42
That's a wrong example, but if you are looking for a way to access variables defined in a function (local variables) then the answer is "you can't". — Felix Kling
– Felix Kling, Commented Aug 9, 2012 at 15:04

Muthu Kumaran · Accepted Answer · 2012-08-09 14:44:22Z

4

You can access like this,

var functionVar = function(){
  this.var = 1;
}

 var o = new functionVar();
 alert(o.var)

answered Aug 9, 2012 at 14:44

Muthu Kumaran

18k5 gold badges50 silver badges72 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

user1106925 Over a year ago

That's a property on the constructed object. Not a variable. Are we certain this function was meant to be used as a constructor?

Muthu Kumaran Over a year ago

Yes, it's not a variable. My bad english.

rajakvk · Accepted Answer · 2013-06-05 05:49:20Z

0

a new will do the trick.

var functionVar = function(){
  this.var = 1;
}

console.log(new functionVar().var);

Though not sure what you are trying to achieve by using this code.

answered Jun 5, 2013 at 5:49

rajakvk

10.2k17 gold badges50 silver badges52 bronze badges

Collectives™ on Stack Overflow

How to access a variable within a function

2 Answers 2

2 Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

2 Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related