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Specification Clicking a star rating turns on the stars to the left of the star I clicked. Clicking a star submits the star rating. When I refresh the page, the star ratings should be persistent. We’ll be using Rails’ functions including: form_for hidden_field Rails Helpers We’ll be using jQuery functions including: click each ajax <code> [...]

CoffeeScript offers more than nice syntax for setting and managing data and functions. It also offers Classes, Inheritance, access to a ‘super’ method, Ruby-style string interpolation, easy variable and function bindings, and chained comparisons. Here’s the code I showed in the video: class Vehicle constructor: (@name) -> move: (miles) -> console.log @name + " drove [...]

  Ruby on Rails 3.1 is moving to use Sprockets to compile CoffeeScript into JavaScript and include JQuery in it’s JavaScript by default. This is a quick demo of how it all hangs together to manage your JavaScript in Rails 3.1.

  CoffeeScript is now going to be a default installation with Ruby on Rails. So, I installed CoffeeScript and NodeJS and have been playing with it for the last hour or so. Here are the basics you need to know to use CoffeeScript including functions, arrays, hashes (objects), control functions (if, else, unless) and loops. [...]

This video demonstrates how to build a countdown timer with the setInterval function in Javascript, a text field, and jQuery to update your text field.