Access to function variable jquery

Question

I am using jQuery and I am a beginner. I have this structure:

function a(){
   function b(){
     return x;
   }
}

I want to return x from primary function that is a(). How can I do this?

Just return function's b value

Yang
– Yang

2014-05-06 11:10:21 +00:00
Commented May 6, 2014 at 11:10 — Yang
– Yang, Commented May 6, 2014 at 11:10
You just call b() in a's body.

Cerbrus
– Cerbrus

2014-05-06 11:10:22 +00:00
Commented May 6, 2014 at 11:10 — Cerbrus
– Cerbrus, Commented May 6, 2014 at 11:10
FYI, this has nothing to do with jQuery

A. Wolff
– A. Wolff

2014-05-06 11:14:50 +00:00
Commented May 6, 2014 at 11:14 — A. Wolff
– A. Wolff, Commented May 6, 2014 at 11:14
@A.Wolff: that's right

Sajad Karuthedath
– Sajad Karuthedath

2014-05-06 11:15:12 +00:00
Commented May 6, 2014 at 11:15 — Sajad Karuthedath
– Sajad Karuthedath, Commented May 6, 2014 at 11:15
@A.Wolff i.sstatic.net/rGtMH.jpg

Yang
– Yang

2014-05-06 11:16:14 +00:00
Commented May 6, 2014 at 11:16 — Yang
– Yang, Commented May 6, 2014 at 11:16

Cerbrus · Accepted Answer · 2014-05-06 11:29:37Z

2

You have a few options.

Assuming:

var x = 1;

You could do this:

// Return a function when calling `a()`, which can be called --> `a()()`;
function a() {
    return function b (){
        return x;
    }
}

a()(); // 1;

// Return the result of `b()` when calling `a()`;
function a(){
    function b(){
        return x;
    }
    return b();
}

a(); // 1;

// Return a object containing a function named `b`.
function a(){
    return {
        b: function(){
            return x;
        }
    };
}

a().b(); // 1;

edited May 6, 2014 at 11:29

answered May 6, 2014 at 11:12

Cerbrus

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Comments

Neel · Accepted Answer · 2014-05-06 11:11:16Z

0

function a() {
    return b();
   function b (){

     return x;
   }
}

answered May 6, 2014 at 11:11

Neel

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2 Comments

Neel Over a year ago

I guess somebody downvoting everybody's answer here @A.Wolff

Cerbrus Over a year ago

@Neel: Looks like it.

Jamie · Accepted Answer · 2014-05-06 11:12:20Z

0

A cleaner version of answer :

function a(){
    function b(){
        return x;
    }
    return b();
}

answered May 6, 2014 at 11:12

Jamie

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Comments

Cerbrus · Accepted Answer · 2014-05-06 11:38:23Z

0

Just use:

function a(){
    return b();
}

function b(){
    return x;
}

edited May 6, 2014 at 11:38

Cerbrus

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answered May 6, 2014 at 11:14

Sajad Karuthedath

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Comments

Cerbrus · Accepted Answer · 2014-05-06 11:38:42Z

0

I think you mean this?

function a() {
    function b (){
        return x;
    }
    return b();
}

edited May 6, 2014 at 11:38

Cerbrus

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answered May 6, 2014 at 11:12

deadulya

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Comments

Cerbrus · Accepted Answer · 2014-05-06 11:39:37Z

0

Try this fiddle:

function a() {
    var x = 34;
    return function b (){
        return x;
    }
}

var f1 = a();
var f2 = f1();
alert(f2); //34

edited May 6, 2014 at 11:39

Cerbrus

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answered May 6, 2014 at 11:16

user2575725

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