| jQuery.fn.brightness = function() { | |
| var bg_color, rgba, y; | |
| bg_color = this.css('background-color'); | |
| if ((bg_color != null) && bg_color.length) { | |
| rgba = bg_color.match(/^rgb(?:a)?\(([0-9]{1,3}),\s([0-9]{1,3}),\s([0-9]{1,3})(?:,\s)?([0-9]{1,3})?\)$/); | |
| if (rgba != null) { | |
| if (rgba[4] === '0') { | |
| if (this.parent().length) return this.parent().brightness(); | |
| } else { | |
| y = 2.99 * rgba[1] + 5.87 * rgba[2] + 1.14 * rgba[3]; |
This is a small collection of scripts showing how to use require.js. It's only one of several ways of setting up a require.js project, but it's enough to get started.
At its core, require.js is about three things:
The following files show how these are achieved.
| /** | |
| * Performs a binary search on the host array. This method can either be | |
| * injected into Array.prototype or called with a specified scope like this: | |
| * binaryIndexOf.call(someArray, searchElement); | |
| * | |
| * @param {*} searchElement The item to search for within the array. | |
| * @return {Number} The index of the element which defaults to -1 when not found. | |
| */ | |
| function binaryIndexOf(searchElement) { | |
| 'use strict'; |
Git is a free and open source distributed version control system designed to handle everything from small to very large projects with speed and efficiency.
Git is easy to learn and has a tiny footprint with lightning fast performance. It outclasses SCM tools like Subversion, CVS, Perforce, and ClearCase with features like cheap local branching, convenient staging areas, and multiple workflows.
JavaScript engines such as Google’s V8 (Chrome, Node) are specifically designed for the fast execution of large JavaScript applications. As you develop, if you care about memory usage and performance, you should be aware of some of what’s going on in your user’s browser’s JavaScript engine behind the scenes.
Continue reading Writing Fast, Memory-Efficient JavaScript, great general overview of a Google employee