Then, we'll set the prototype of that empty function equal to the argument object. First, inside the body of our Object.create implementation, we'll create an empty function. This means that any properties or methods defined in ObjectFactory.prototype are accessible by obj. To do this, we'll use our knowledge of how the new keyword and prototypes work in JavaScript. “ What is a constructor function? ”įor example, when the constructor ObjectFactory is used to instantiate a new object referenced by the variable obj on line 5 of the following code block, obj's hidden internal ] property now holds a reference to the same object that is referenced by ObjectFactory.prototype. prototype is set as the prototype of the new object.Ī constructor function is like an object factory that creates new objects which are instances of itself. prototype property contains a reference to an object and when a constructor is used to instantiate or create a new object. prototype properties and cannot be used as constructors. Prototype is an open-source JavaScript framework that smooths over the rough edges of cross-browser development so you can focus on writing kick-ass web. I say almost all because arrow functions and methods defined using the concise syntax do not have.
prototype is a special property that almost all functions have that is only used when a function is invoked as a constructor function.
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