privatization

Add encapsulation to objects in Javascript.

Install

npm install privatization --save

Usage

The object with methods and data members that you want to encapsulate is passed in as the first argument to the function privatize(target [, prefix]). In the example below, the prototype is passed in. The prefix is the characters put infront of private members. The default is a single underscore. The prefix is removed after privatize() has been called.

var privatize = require('privatization');
 
function Person(n) {
    this._name = n;
    privatize(this, '_');
}
Person.prototype._format = function () {
    return 'Hi, my name is ' + this.name;
};
Person.prototype.greet = function () {
    console.log(
        this.format()
    );
};
 

Result

var p = new Person('Adam');
 
p._format; // undefined
p.format; // undefined
p._name; // undefined
p.name; // undefined
 
p.greet(); // 'Hi, my name is Adam'