JS Object-oriented first knowledge

OOP Programming in JS

We often use the system's own objects, called system objects, such as: Array,date and so on. Variables under Objects: Properties called objects, functions below objects: methods called objects.

Create an empty object, var obj = {}; var obj = new Object ();

Factory Mode: Encapsulation function

function Createperson (name) {

1. Raw Materials
var obj = new Object ();
2. Processing
Obj.name = name;
Obj.showname = function () {
alert (this.name);
};
3. Appearances
return obj;

}

When new calls a function: This is the object that is created, and the return value of the function is directly this (implicit return)

Functions called after new: called constructors

So the factory way can be written like this:

function Createperson (name) {

THIS.name = name;
This.showname = function () {
alert (this.name);
};

}

JS Object-oriented first knowledge