javascript object prototype

not found, the value is Undefined.console.log (Obj1.showusername ()); Ghostwuconsole.log (Obj2.showusername ()); Weizhuang There is no showusername this method on the obj1,obj2, so it will follow the __proto__ Find the Showusername method on the Createobj.prototype prototype object if the Showusername on the Createobj.prototype prototype

First look at a picture, comb and comb. I. Basic CONCEPTS　The prototype chain has an object for each constructor, and the prototype object contains a pointer to the constructor, and the instance contains an internal pointer to the prototype

Javascript prototype, prototype chain, object replication and Other Principles and Examples (below), javascript example Prototype Prototype is an important concept in

ExtJs -- 09 -- three methods of javascript Object writing prototype: the most efficient way to set prototype through prototype /*** Recommended three methods for writing javascript objects. The third method is recommended for exe

This article mainly introduces JS prototype objects and prototype links in detail. For more information, see Javascript. All objects are different, it can be roughly divided into two types: Common Object and Function Object ). In general, the objects generated through the n

and the new prototype, as in the following words:function Person () {}; varProto =Person.prototype; varperson =NewPerson ; //instance object in front Person.prototype={name:"Jack", Sayname:function () {Console.log ("Name:"+ This. Name); }} console.log (Person.prototype.isPrototypeOf (person)); //False The new prototype is not on the person

JavaScript object-oriented and prototype, javascript object-oriented ECMAScript has two development modes: 1. Functional (procedural); 2. Object-oriented (OOP ); 1. Create an object1. Common O