Report Cyclomatic complexity Unused variables Undefined variables Warn About == null About debugging code About unsafe for..in About arguments.caller and .callee About assignments if/for/... About functions inside loops About eval About unsafe line breaks About potential typos in logical operators When code is not in strict mode When new is used for side-effects Assume Browser NodeJS jQuery Develo

scopeleaks.js This small library allows for detecting if miscellaneous variables are being leaked into the global Javascript scope. It is useful to sanitize your scripts, both in browser and CommonJS environments. Setup The setup of scopeleaks.js is minimal. You just need to insert it into the appropriate execution environment, and all detection routines will be bound. To leverage all the benefits

xc.js is a framework for HTML Canvas games in Javascript. It's simple and fun to use and you can even try it out right here in your browser. But that's not all. xc.js also runs on other platforms. You can write your games in Javascript and run them in all sorts of cool places (like on your phone!). Try xc.js now! You can download xc.js and run it on Windows, Linux, or OS X. Or, even better, try it

I wanted a reasonably sized photographic image with a 24-bit alpha channel. So I used a JPEG for what JPEGs are good for and a PNG for what PNGs are good for… I combined them using an HTML5 canvas element and then inserted into the DOM. The results look the same as using a normal 24-bit PNG but are one-half to one-sixth the size. In one case we got a 573KB 24-bit PNG down to a 49KB JPEG with a 4KB

I originally posted this as a gist, here. I thought it best to keep my readers informed so that’s why I’m posting it here too: // ---------------------------------------------------------- // A short snippet for detecting versions of IE in JavaScript // without resorting to user-agent sniffing // ---------------------------------------------------------- // If you're not in IE (or IE version is le

Revision 2.2 Aaron Whyte Bob Jervis Dan Pupius Eric Arvidsson Fritz Schneider Robby Walker This style guide contains many details that are initially hidden from view. They are marked by the triangle icon, which you see here on your left. Click it now. You should see "Hooray" appear below. Hooray! Now you know you can expand points to get more details. Alternatively, there's a "toggle all" at

brain.js demo - train a neural network to recognize color contrast

wu.js is a JavaScript library providing higher order functions (such as map, filter, and reduce) for ECMAScript 6 iterators. Getting Started In Modern Browsers Supporting ES6 Download the ES6 version <script src="path/to/wu.js" defer></script> In Legacy ES5 Browsers Download the ES5 debug build (non-minified, source-maps) <script src="https://raw.githubusercontent.com/mozilla/source-map/master/dis

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It is common to speak of context-free languages in terms of context-free grammars (CFGs). A series of recursion rules used to produce string patterns is known as a context-free grammar. There is no way for a context-free grammar to account for every imaginable language. Each of these academic disciplines investigates context-free grammar in different ways. Computer engineering looks at the design

Documentation All documentation for the framework is based on Markdown and provides a simple, natural and flexible way to document the code. This simple set of perl scripts has become its own tool called joDoc. Currently joDoc is included with jo, but in the future it will have its own codebase. Building jo is a JavaScript framework for HTML5 capable browsers and devices. It's pretty easy to build