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- Okay, this is a large chunk of data representing a requirejs configuration.
- It helps you organize your javascript code into reusable modules, manage dependencies between those modules, and load them efficiently in the browser.
- It's a mapping of module names (the names you use in your require() calls) to the actual file paths.
Okay, this is a large chunk of data representing a requirejs configuration. Let’s break down what it means.
What is RequireJS?
RequireJS is a JavaScript module loader. It helps you organize your javascript code into reusable modules, manage dependencies between those modules, and load them efficiently in the browser. This is crucial for larger web applications to avoid global namespace pollution and improve performance.
Structure of the Configuration
The configuration is a JavaScript object with three main sections:
paths: This section defines aliases (short names) for JavaScript files or libraries. It tells RequireJS where to find these files.shim: This section is used for libraries that don’t follow the standard RequireJS module definition format (AMD - Asynchronous Module Definition). It provides information about how to load these libraries and their dependencies.map: This section defines URL mappings. It allows you to use a short alias for a URL, or to redirect a URL to a different location.
Detailed Breakdown
1. paths
This is the most extensive part. It’s a mapping of module names (the names you use in your require() calls) to the actual file paths.
* libs/ prefix: Many of the paths start with libs/. This suggests that all these libraries are located in a directory named libs relative to the HTML page that includes the RequireJS script.
* fly/ prefix: Similar to libs/, this indicates a directory named fly containing custom or application-specific code.
* Specific libraries: Here’s a breakdown of some of the libraries included:
* jQuery: "jquery": "libs/jquery/jquery-1.11.3" – The core jQuery library.
* Underscore.js: "fly/libs/underscore-1.5.1": "_" – A utility library providing functional programming helpers.
* Backbone.js: "fly/libs/backbone-1.0.0": "Backbone" – A JavaScript framework for building structured client-side applications.
* DataTables: "libs/dataTables": "libs/dataTables/jquery.dataTables" – A popular library for creating interactive tables. Several plugins are also included (e.g., dataTables.fixedColumns,dataTables.fixedHeader).
* jQuery UI: A large set of UI widgets and interactions built on top of jQuery (e.g., tabs, dialogs, autocomplete).
* Waypoints: "libs/waypoints/jquery.waypoints": "3.1.1" – A library for triggering functions based on scroll position.
* Other jQuery Plugins: dotdotdot, flexslider, lazyload, maskedinput, marquee, numberformatter, placeholder, scrollbar, tablesorter, touchswipe.
* SockJS: "liveconnection/libs/sockjs-0.3.4": "SockJS" – A library for providing WebSocket-like functionality in browsers that don’t fully support WebSockets.
* Dateformat: "libs/dateformat": "1.0.3" – A library for formatting dates.
2.shim
this section handles libraries that don’t use the standard AMD module format. It tells RequireJS how to load them and what their dependencies are.
* liveconnection/managers/connection: this module depends on liveconnection/libs/sockjs-0.3.4. it tells RequireJS to load SockJS before this module.
* liveconnection/libs/sockjs-0.3.4: This module exports a global variable named SockJS.
* libs/setValueFromArray and libs/getValueFromArray: These modules export global variables named set and get respectively.
* fly/libs/backbone.marionette: Depends on jQuery, Underscore, and Backbone, and exports Marionette.
* fly/libs/underscore-1.5.1: Exports the global variable