JavaScript Series learning----Object Related concepts Understanding

1. Constructors (relative to classes in object-oriented programming languages)

2, object instance (it is the object constructed by the constructor, use to the keyword new)

3, this keyword (often refers to our object itself)

Let's look at an example:

var person = function person (living, age, gender) {

Below is the new object, which is being created (i.e. this = new object ();)

this.living = living;

This.age = age;

This.gender = gender;

This.getgender = function () {return this.gender;};

}

When the function was called with the New keyword ' This ' is returned instead of false

Instantiate a person object named Cody

var = new person (true, Cody, ' Male ');

Cody is a object and an instance of person ()

Console.log (typeof Cody); Logs Object

Console.log (Cody); Logs the internal properties and values of Cody

Console.log (Cody.constructor); Logs the person () function

JavaScript Series learning----Object Related concepts Understanding