Create class with object constructor and public/private properties and methods.

oop.js

function MyClass(publicVal, privateVal) {

    var self = this;
    

    /**
     * Public Property
     */
    this.publicValue = publicVal;
    
    /**
     * Public Property Setter
     */
    this.setPublicValue = function(publicVal) {
        this.publicValue = publicVal;
        return this;
    }
    
    /**
     * Public Property Getter
     */
    this.getPublicValue = function() {
        return this.publicValue;
    }
    
    
    /** 
     * Private Property
     */
    var privateValue = privateVal;
    
    /** 
     * Private Property Setter
     */
    this.setPrivateValue = function(privateVal) {
        privateValue = privateVal;
        return this;
    }
    
    /** 
     * Private Property Getter
     */
    this.getPrivateValue = function() {
        return privateValue;
    }
    
    
    /**
     * Public Method
     */
    this.publicMethod = function() {
        alert('Public Method');
        return this;
    }
    
    /**
     * Public Method
     */
    var privateMethod = function() {
        alert('Private Method');
        return this;
    }
    
    return this;
}

var obj = new MyClass('Public Value', 'Private Value');
// or without new statement
var obj = MyClass('Public Value', 'Private Value');