JavaScript Programming : Beginner to Professional (BASIC + ADVANCE): GUIDE TO LEARN JAVASCRIPT IN 7 DAYS by Maurya Rahul & Maurya Rahul

Author:Maurya, Rahul & Maurya, Rahul [Maurya, Rahul]
Language: eng
Format: epub
Publisher: UNKNOWN
Published: 2020-06-30T16:00:00+00:00

Chapter 23: Namespacing

Section 23.1: Namespace by direct assignment

//Before: antipattern 3 global variables

var setActivePage = function () {};

var getPage = function () {};

var redirectPage = function () {};

//After: just 1 global variable, no function collision and more meaningful function names var NavigationNs = NavigationNs || {};

NavigationNs.active = function () {}

NavigationNs.pagination = function () {}

NavigationNs.redirection = function () {}

Section 23.2: Nested Namespaces

When multiple modules are involved, avoid proliferating global names by creating a single global namespace. From there, any sub-modules can be added to the global namespace. (Further nesting will slow down performance and add unnecessary complexity.) Longer names can be used if name clashes are an issue:

var NavigationNs = NavigationNs || {}; NavigationNs.active = {};

NavigationNs.pagination = {}; NavigationNs.redirection = {};

// The second level start here.

Navigational.pagination .jquery = function (); Navigational.pagination .angular = function (); Navigational.pagination .ember = function ();

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