A set of javascript tools for working with files. It offers different kinds of things: A cross-browser JS API to work with File objects. Image helper methods, like rotating...

If you want to do JavaScript-style camelization, ActiveSupport's String#camelize method can actually help you out. Simply pass a :lower argument to it. >> 'foo_bar_baz'.camelize

To find an input with the type hidden, you need to specify the type hidden: find_field('Some label', type...

Javascript library for drag'n'drop that seems to have more options than native HTML5 drag'n'drop. They also claim to support "multi-touch", which would be awesome if...

...on touch devices. Another library with similar aims is interact.js (Github). They're pitching JavaScript drag and drop, resizing and multi-touch gestures with inertia and snapping for modern browsers...

...replace the tracking code with a debug version that prints debugging info to the JavaScript console...

...soft hyphens, which makes testing uncomfortable. Automatic insertion of soft hyphens You can use JavaScript libraries like hypher (includes LGPL patterns!) to automatically insert soft hyphens into the text of...

Loading the correct hyphenization patterns for the language you're using JavaScript to apply the library function to the DOM nodes you want hyphenated Manually adding exceptions...

The attached ImageLoader helper will start fetching an image and return an image that is resolved once the image is...

Less.js is a JavaScript implementation of LESS that’s run by your web browser. As any JavaScript, you include a link to the script in your HTML, and…that’s...

Chart.js seems to be a good alternative to Google's Chart API and other commercial chart drawing libraries.

...In other cases (e.g. currencies with changing exchange rates) this might not be possible. Javascripts Your Javascript might render text, dates, formats, etc., so you must at least implement minimal...

...a gem that gives you your Rails locale dictionary and the I18n class in Javascript. Note that you might be using Javascript libraries that render strings, e.g. date pickers. Make...

The attached article explains how to preload images with only CSS. No Javascript required. The gist is: .element:after { content: url(img01.jpg) url(img02.jpg) url(img03.jpg); display: none...

...get a second request, but the error page will show with full CSS and JavaScript. The code assumes you are using Ruby on Rails with better_errors, which is the...

Selenium has been the siren song that continually calls out to us. Unfortunately, in practice we’ve been unable to...

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...