javascript class vs prototype

Prototype and prototype in JavaScript 1. prototype There is no class concept in JavaScript, but JavaScript can indeed implement overload, polymorphism, and inheritance. In fact, thes

When using object-oriented programming, the inheritance relationships between objects are indispensable! Prototype is an important method to implement javascript inheritance!Let's take a look at the following code:Copy codeThe Code is as follows:Function person (name, age ){This. name = name;This. age = age;}Person. prototype. getInfo = function (){Alert ("My nam

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 object. So, if the prototype object equals another instance of the

javascript scope chain related to the prototype chain? From the principle analysis, do not say what I found online In my personal opinion, there is no contact.In general, the scope chain is for variables. For a large range in js, there are only two scopes: global scope and internal function scope, if function 2 is defined in function 1 (usually anonymous), a global scope of function 1 is available; the fea

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 understand the concepts of object types and prototypes.As we mentioned above, 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 understand the concepts of object types and prototypes.As we mentioned above, the

1 What is prototype The prototype property of an object in JavaScript that returns a reference to the object type prototype. This is a rather awkward explanation, and to understand it, the concept of object type (type) and prototype (pr