Struct and object oriented in JavaScript

Question

I come from C, C++, Java background. I want to create a struct/ class with some attributes and methods like:

MyClass{
    string text;
    array characters;
    printText(){ 
       print text;
    }
    printLen(){
       print characters.length();
    }
}

So next time I can create an object like above by just calling its constructor. How do I implement this in JavaScript? I am new to the programming principles followed in javascript, I want to create a custom data type here for reusability.

Have you searched for anything yet? This is one of the most common questions. It is really simple. Good luck! — Zack Argyle, Aug 14 '14 at 16:24
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Introduction_to_Object-Oriented_JavaScript or just look for related questions is SO — briosheje, Aug 14 '14 at 16:26
Great reference about javascript patterns: http://addyosmani.com/resources/essentialjsdesignpatterns/book/ take a look at Constructor Pattern. Also, Module and Singleton. — Christian Benseler, Aug 14 '14 at 16:27

score 1 · Accepted Answer · answered Aug 14 '14 at 16:27

1

function MyClass () {
    this.text = "";
    this.characters = [];
}

MyClass.prototype.printText = function () {
    console.log(this.text);
};

MyClass.prototype.printLen = function () {
    console.log(this.characters.length);
};

var instance = new MyClass();
instance.text = "test";
instance.characters.push('a');
instance.characters.push('b');
instance.printText();
instance.printLen();

answered Aug 14 '14 at 16:27

Callebe

1,087
7
18

`this.characters.length` rather than `this.characters.lengt` Moreover, we don't know whathe means by "print". – briosheje Aug 14 '14 at 16:28
It is just an example. – Callebe Aug 14 '14 at 16:29
I want to create a javascript library where I define such contructs. Is this a good way in such a context? – Nitin Labhishetty Aug 14 '14 at 16:30
You must to declare your library in one file and include it using a HTML SCRIPT tag. `` – Callebe Aug 14 '14 at 16:34
I meant is it a good design principle? – Nitin Labhishetty Aug 14 '14 at 16:36
Yes, it is. Doing this you can reuse your library and Classes. – Callebe Aug 14 '14 at 16:46

Struct and object oriented in JavaScript

1 Answers1