JavaScript advanced knowledge points-inheritance

The code information comes from http://ejohn.org/apps/learn/.

How Inheritance Works

functionfunction  Ninja () {}  new person ();   var New  instanceof Ninja, "Ninja automatically receives the attribute in Ninja.prototype"instanceof person, " Also comes from Person.prototype"instanceof object," also from and the object Prototype ");

This example can show the inheritance mechanism and the prototype chain well. The fundamental principle is to instantiate the prototype of the inherited constructor, which uses __proto__ to access the ancestor. Ninja Inherit Ninja,ninja is new person (), inherit Person.prototype, and Person.prototype, inherit from the most fundamental object.prototype.

Build Our own inheritance

functionfunction() {   returnthis. name;};   function Me () {   this. Name = ' Johnresig 'new person ();   var New Me (); Console.log (Me.getname ());

The Me object property = property of the property +object.prototype when instantiating its own property + Me.prototype.

So the Me object has its own name property, the GetName function.

JavaScript advanced Knowledge point-inheritance