Class Inheritance implementation

Class Inheritance implementation for Node.js

Really inspired by the MooTools' 1.x and John Resig's Class implementation

Alias are the same as the Mootools 1.x Class

• Implements : Mixin - Array of Class to implement
• Extends : Class to extend
• initialize : constructor, method called when an object of this Class is instantiate
• parent : used to call the same method in the Extended Class.

The package also provide the Class.Extras.Options from MooTools 1.x

Basic Example

var Class = require('inheritance').Class;
var Animal = new Class({ 
    type : '',

    initialize : function(type) {
        this.type = type;
    },

    toString: function() {
        return "I'm a " + this.type;
    }
});

var cat = new Animal('cat');
console.log(cat.toString()); // -» I'm a cat

Extends Example

var inher = require('inheritance')
    Class = inher.Class;

var Animal = new Class({
    type : '',

    initialize : function(type) {
        this.type = type;
    },

    toString: function() {
        return "I'm a " + this.type;
    }
});

var Cat = new Class({
    Extends : Animal,

    name : '',

    initialize : function(name) {
        this.parent('cat');
        this.name = name;
    },

    toString : function() {
        return this.parent() + ' and my name is ' + this.name;
    }

});

var cat = new Cat('Kitty');
console.log(cat.toString()); // -» I'm a cat and my name is Kitty

Implements Example

var inher = require('inheritance')
    Class = inher.Class,
    Options = inher.Options;

var Animal = new Class({
    Implements : [Options],
    options : {},

    type : '',

    initialize : function(type, options) {
        this.setOptions(options);
        this.type = type;
    },

    toString: function() {
        return "I'm a " + this.type;
    }
});

var Cat = new Class({
    Extends : Animal,

    name : '',

    initialize : function(name, options) {
        this.parent('cat', options);
        this.name = name;
    },

    toString : function() {
        return this.parent() + ', my name is ' + this.name + (this.options.color ? ' and my color is ' + this.options.color : '');
    }

});

var options = { color : 'Black&White' };
var cat = new Cat('Kitty', options);
console.log(cat.toString()); // -» I'm a cat, my name is Kitty and my color is Black&White
console.log(cat.options == options); // -» false

Contributors

• DieVarDump

MIT Licenced