javascript object prototype

When using object-oriented programming, the inheritance between objects is naturally unavoidable! And the prototype is a very important way to achieve JavaScript inheritance! Let's start by looking at the following code: Copy Code code as follows: function person (name, age) { THIS.name = name; This.age = age; } Person.prototype.getInfo =

Note: The built-in function object Funtion prototype prototype is an instance of object , but it is a function type.Function. prototype instanceof Object; true ---is an instance of Objectfunction.

); Createobj.prototype.showusername=function () { returnthis.userName;} console.log (obj1.showusername () ) NBSP;//GHOSTWU is not called.Functioncreateobj (uName,uAge) { this.userName=uName; this.userAge=uAge;} varobj1=newcreateobj ( ' GHOSTWU ', 22 );createobj.prototype={ showusername:function () { returnthis.userName; } }console.log (obj1.showusername () ) //errorSince the prototype object has been rew

); Createobj.prototype.showusername=function () { returnthis.userName;} console.log (obj1.showusername () ) NBSP;//GHOSTWU is not called.Functioncreateobj (uName,uAge) { this.userName=uName; this.userAge=uAge;} varobj1=newcreateobj ( ' GHOSTWU ', 22 );createobj.prototype={ showusername:function () { returnthis.userName; } }console.log (obj1.showusername () ) //errorSince the prototype object has been rew

The difference between javascript prototype modification and rewriting (overwrite) Is that javascript prototype Each JavaScript function has the prototype attribute (the javascript

implicit prototype __proto__ of the instance does not point to the overridden prototype object, so it cannot be calledAnother problem, if there is a reference type on the prototype object (prototype), be careful, because multiple

Each function we create has a prototype (prototype) attribute, which is a pointer to an object, and the purpose of this object is to include properties and methods that can be shared by all instances of a particular type. If it is understood literally, then prototype is the

1. What is prototype? The prototype attribute of the object in Javascript, which can return the reference of the Object Type prototype. This is a pretty straightforward explanation. To understand it, you must first correctly u

1. What is prototype?The prototype attribute of the object in JavaScript, which can return the reference of the Object Type prototype. This is a pretty straightforward explanation. To understand it, you must first correctly unders