How to initialize an object in javascript?

Question

I would like to initialize an object in javascript ..

My code is as follows:

var PageSlider = { sliders: [], addSlider: function(display, target, itemClass, width, height, itemsPerPage, defaultPage){ var slideConfig = { display : display, target : target }; var slider = this.createSlider(slideConfig); slider.initSlider(); this.sliders.push(slider); }, copy : function(obj) { if (null == obj || "object" != typeof obj) return obj; var copy = obj.constructor(); for (var attr in obj) { if (obj.hasOwnProperty(attr)) copy[attr] = obj[attr]; } return copy; }, getInstance : function(){ var copy = PageSlider.copy(PageSlider); this.sliders.length = 0; return copy; } } 

Using the getInstance () method, just copy the object. I need to do to get an instance of an object.

Help me please. Thanks.

Answer 1

I would recommend prototyping like the following

 var PageSlider = function() { this.sliders = []; } PageSlider.prototype.addSlider = function(display, target, itemClass, width, height, itemsPerPage, defaultPage){ var slideConfig = { display : display, target : target }; var slider = this.createSlider(slideConfig); slider.initSlider(); this.sliders.push(slider); } slider = new PageSlider(); 

Answer 2

PageSlider is already an object. To get an instance outside of it, just use its name, for example:

 var giveMeAnInstanceOfPageSlider = PageSlider; 

Answer 3

You can do it like this since PageSlider is already an object

var pageSlider = PageSlider

Answer 4

How about var pageSlider = PageSlider . PageSlider already an object.

Answer 5

The idea of ​​the code is that getInstance will copy the PageSlider object, actually initialize a new empty object using the values ​​of the existing PageSlider object - the equivalent of obtaining an instance of the object.

This code is strange because it blurs the line between “classes” and objects in JavaScript (which is similar to what the Io programming language does), and is more true for the concept of object prototypes.