Encapsulation: Private Attribute

In JavaScript OOP there are attributes called private attributes. Knowing if an attribute is private or public, an API user can focus on the API as a whole.

Let’s create some private attributes.

(function() {
    var private_id = guid();

    var init = function() {
        // Private attribute holder
        this[private_id] = {};

        // Create_time is a private attribute
        this[private_id].creation_time = (new Date()).getTime();
    };

    // This is the public method accessing the private attribute
    var get_creation_time = function() {
        return this[private_id].creation_time;
    };

    // Anything listed below are public methods
    My_Class = Class.extend({
        init: init,
        get_creation_time: get_creation_time
    });
})();

Find more JavaScript tutorials, code snippets and samples here or more jQuery tutorials, code snippets and samples here.

Find more JavaScript tutorials, code snippets and samples here or more jQuery tutorials, code snippets and samples here.

👋 Added by Ciprian on Monday, January 15, 2018 in Blog, JavaScript. Last modified on Monday, January 8, 2018.

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