jsPDF is an open-source library for generating PDF documents using nothing but Javascript. You can use it in a Firefox extension, in Server Side Javascript and with Data URIs...
Underscore is a utility-belt library for JavaScript that provides a lot of the functional programming support that you would expect in Prototype.js (or Ruby), but without extending any of...
...the built-in JavaScript objects. It's the tie to go along with jQuery's tux...
Comprehensive, yet simple, stealthy and fast. Datejs has passed all trials and is ready to strike. Datejs doesn’t just...
Simple DOM-less
Johnson wraps JavaScript in a loving Ruby embrace. It embeds the Mozilla SpiderMonkey JavaScript runtime as a C extension...
...using a tool like Unpoly you might want to set autocomplete="off" in the JavaScript that also initializes your date picker library: up.compiler('.date-picker', function(input) { input.setAttribute('autocomplete', 'off...
}) This way users with JavaScript disabled (and hence no calendar popups) will still get the browser's default autocomplete behavior...
...flaky end-to-end tests: This Ruby gem synchronizes Capybara commands with client-side JavaScript and AJAX requests. This greatly improves the stability of a full-stack integration test suite...
Sprockets is a Ruby library that preprocesses and concatenates JavaScript source files. It takes any number of source files and preprocesses them line-by-line in order to build a...
...different file types including: Ruby (business logic) HTML fragments (layouts and views) CSS/Sass/SCSS (styles) JavaScript (client-side behavior) Static media (images, fonts, videos) Except for the Ruby part, all these...
...system listed below, understand how they achieve: Asset concatenation Are they bundling many small JavaScript or CSS files into one single file? If yes, how can we define a "manifest...
TLDR: A function is hard to use when it sometimes returns a promise and sometimes throws an exception. When writing...
JavaScript Garden is a growing collection of documentation about the most quirky parts of the JavaScript programming language. It gives advice to avoid common mistakes, subtle bugs, as well as...
...performance issues and bad practices that non-expert JavaScript programmers may encounter on their endeavours into the depths of the language. JavaScript Garden does not aim to teach you JavaScript...
Small (1.5 KB) Javascript library that lets you render tables, lists, etc. with hundreds of thousands of items. How it works is that you move your data set from the...
Despite the many JavaScript libraries that are available today, I cannot find one that makes it easy to add keyboard shortcuts(or accelerators) to your javascript app. This is because...
...keyboard shortcuts where only used in JavaScript games - no serious web application used keyboard shortcuts to navigate around its interface. But Google apps like Google Reader and Gmail changed that...
When testing code that uses pushState / replaceState, your browser will appear to navigate away from http://localhost:3000/specs (or wherever...
Batman is an alternative Javascript MVC with a similar flavor as AngularJS, but a lot less features and geared towards Ruby on Rails. The attached link leads to a tutorial...
...you never want to override with a default. To make it worse, languages like JavaScript or Perl have many more falsey values, including the number 0 or the empty string...
...has a key :x, and fetch will return its value nil. Setting defaults correctly: JavaScript Plain ES5 (no libraries) Prefer to check if the variable is null or undefined before...
...Using jasmine.clock().mockDate() you can mock new Date() (which returns the current time in Javascript) While you can use SinonJS Fake timers, using the built-in Jasmine clock will save...
A while ago I tweeted a thread about how a small JavaScript snippet, one that can fit in a single tweet in fact, can be used to allow defining custom...
...are for Sprockets. Every page in your application uses many assets, such as images, javascripts and stylesheets. Without your intervention, the browser will request these assets again and again on...
...to other images in your stylesheets (background-image: url(/path/to/asset)) and sometimes in your Javascripts. You need to route all these paths through Rails or you won't get hashed...
...many ways to achieve this, from SVGs inlined into the HTML, SVGs inlined in CSS, JavaScript-based solutions, to icon fonts. Out of all these options, the tried and true...
...most advantages, since icon fonts are supported everywhere they perform well and require no JavaScript at all their icons align nicely with text their icons automatically inherit color and size...
...to set a breakpoint: Gem Breakpoint pry binding.pry byebug byebug debug binding.break Debugging in JavaScript At any line, insert the command debugger When a modern browser's JavaScript interpreter passes...
...a debugging console if developer tools are already open. Do this. Note that since JavaScript is single-threaded, you cannot interact with your app's frontend while the debugging console...
Javascript that implements client-side hyphenation of HTML-Documents...
jQuery plugin to register callback functions to keyboard shortkuts. Keyboard events in vanilla Javascripts are super-painful to work with, so hopefully this library can help...