I would add:
To set the prototype of an object, you modify the 'prototype' property
of its constructor function. To get access to the prototype you can
use myFunction.prototype or myInstance.__proto__.
//Constructor function
var myFunction = function() { /*...*/ }
myFunction.prototype.myProperty = 'myValue';
//Instance
var myInstance = new myFunction();
myInstance.myProperty === 'myValue'; //true
//Access to prototype
myFunction.prototype === myInstance.__proto__ ===
myInstance.constructor.prototype; //true
Happy new year for everyone!
--
S.Cinos
JavaScript Developer at Tuenti.com
2010/12/29 Lasse Reichstein <[email protected]>:
> On Wed, 29 Dec 2010 08:25:33 +0100, Emeka <[email protected]> wrote:
>
>> Is Prototype JavaScript's way of solving Expression Problem? And what is
>> really the difference between __proto__ and Prototype?
>
> That depends on what you mean by "Prototype".
> The internal [[Prototype]] link of objects is a way to inherit (and thereby
> share)
> properties of other objects. It can be used to add new functionality to an
> unknown
> number of existing objects, by assigning the functionality to their shared
> prototype,
> and that way it can be used to solve the Expression Problem. It just
> requires that
> the Expressions all inherit from a shared prototype object.
>
> The non-standard __proto__ property is some Javascript engines' way of
> reflecting the
> internal [[Prototype]] property, making it accessible for both reading and
> writing.
> It's not-standard and not supported by all engines.
>
> /L
>
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