Story of JS Closures

Once upon a time:

There was a princess…

function princess() {

She lived in a wonderful world full of adventures. She met her Prince Charming, rode around her world on a unicorn, battled dragons, encountered talking animals, and many other fantastical things.

    var adventures = [];

    function princeCharming() { /* ... */ }

    var unicorn = { /* ... */ },
        dragons = [ /* ... */ ],
        squirrel = "Hello!";

But she would always have to return back to her dull world of chores and grown-ups.

    return {

And she would often tell them of her latest amazing adventure as a princess.

        story: function() {
            return adventures[adventures.length - 1];
        }
    };
}

But all they would see is a little girl…

var littleGirl = princess();

…telling stories about magic and fantasy.

littleGirl.story();

And even though the grown-ups knew of real princesses, they would never believe in the unicorns or dragons because they could never see them. The grown-ups said that they only existed inside the little girl’s imagination.

But we know the real truth; that the little girl with the princess inside…is really a princess with a little girl inside.

Note: I was going through StackOverflow and found this story about closures. I am sharing this story here so that people and me off cause don’t have to search on StackOverflow for such amazing stories of Javascript concept.

Original owner and answer can be found here: http://stackoverflow.com/a/6472397/6919706

Thanks to Jacob Swartwood For sharing such great stories  🙂

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