javascript object prototype

/* Class attributes and Object Attributes */Array. Info1 = "Info1"; // adds the class attribute Info1 to the Array.Array. prototype. Info2 = "Info2"; // adds the object attribute Info2 to the Array. Arr = [1, 2, 3];Alert (arr. Info1); // undefinedAlert (arr. Info2); // Info2 Alert (Array. Info1); // Info1 /* Class methods and

Deep understanding of javascript constructor and prototype object, and javascript Constructor Common Object creation Modes Create with the new KeywordThe most basic object creation method is the same as that in most other language

The factory mode and constructor mode are introduced in javaScript object-oriented design and Javascript object-oriented design, as well as their advantages and disadvantages, today, we will continue to explain the prototype mode. Each function we create has a

(); T3.sayhi ();Obj3 inherits Obj2,obj2 inheritance Obj1. When our Obj3 instance object accesses Sayhi, we go to Obj3 's instance object and look for the Sayhi method (not found), then go to the OBJ3 prototype (not found), then go to the parent OBJ2 prototype (not found), and then go to the OBJ1

Javascript is the only widely used, prototype-inherited language, so it takes time to understand the differences between the two ways of inheriting. The first major difference is that Javascript uses a prototype chain to inherit: function Foo () { this.value = n; } Foo.prototype = { method:function () {} };

The source of this article: "Object-oriented JavaScript" by Stoyan StefanovSource: Original translation of red Shi JunyuCopyright Disclaimer: If you are the original author of the original text and do not want this article to be published, you can contact the author to delete it. This translation is compiled by Shi Junyu , you can use it for learning purposes, but it is forbidden to reprint . Fifth

result of the invocation of the prototype inheritance method, and the problem is the same, not repeated here. By the result of the O.method () call, we see that the method defined on the parent prototype will not inherit from the quilt class. The result of the call to O.method3 () shows that the instance method defined in the subclass also cannot access the private instance members defined in the parent cl

In JavaScript, if we have an object but don't know its constructor, how do we get its prototype object?In Chrome or in the Firefox browser, we can use the object's __proto__ property to get its prototype object directly.However, t

working principle of the prototype model, you need to understand the nature of the central ECMAScript. Understanding the Prototype In JavaScript, whenever a new function is created, a prototype property is created for the function based on a specific set of rules. By default, although the

calling o. method (), we can see that the method defined on the parent class prototype will not inherit from the quilt class. By calling o. method3 (), we can see that the instance methods defined in the subclass cannot access the private instance members defined in the parent class. Finally, we can see from the results of the call to subClass. staticMethod () that static members will not be inherited. Finally, this example does not show that multipl

We know a way to define a common object in JavaScript, such as: Let obj == 1= ' string 'function() {alert (' func '= [' x ', ' Y ']; Console.log (obj.num); // 1console.log (obj.string); // "string"Console.log (obj.func); // function () {alert (' func ')}Console.log (Obj.arr); // ["X", "Y"]Or: Let obj = { 1, ' string ', function() {alert (' func ')}, arr: [' x ', ' Y ']}Const