ZNOW

Although JavaScript supports object-oriented programming, it is in prototype-based form. ZNOW is a framework allows programmers to write JavaScript in class-based object oriented style. Use prototype or class-based style is the option of the programmer, and not be restricted by the language itself anymore. http://icarusso.github.io/ZNOW

Encapsulation

var ClasA=Class({
    getA1:function(){
        return this._a;
    },
    _a:'a1'
})
var ClassA2=Class.extends(ClassA)({
    getA2:function(){
        return this._a
    },
    _a:'a2'
})

var obj=new ClassA2();
obj.getA1(); //> a1
obj.getA2(); //> a2
obj._a; //> Undefined

Abstraction

var BaseA=Class({
    foo:ABSTRACT()
})
var ConcreteA=Class.extends(BaseA)({
    foo:function(){
        return true;
    }
})
var BA=new BaseA(); //> Throw error
var CA=new ConcreteA();

Inheritance

var ClassA=Class({
    foo1:function(){
        return 'foo1';
    },
    $foo2:function(){
        return 'foo2';
    }
})
var ClassB=Class.extends(ClassA)({
    foo3:function(){
        return this.super.$foo2() + 'foo3';
    }
})

http://icarusso.github.io/ZNOW