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javascript x
Testing JavaScript with PhantomJS
PhantomJS allows us to test JavaScript without going through a browser window. Here I show how to do this using Capybara and Poltergeist. I also give some tips on handling database transactions and skipping javascript tests.
(10 minutes)
Running JavaScript in Ruby
Sometimes logic needs to be shared between the server-side (Ruby) and the client-side (JavaScript). Here I show how to run JavaScript directly in Ruby through ExecJS and therubyracer.
(14 minutes)
Passing Data to JavaScript
There are a variety of ways to pass variables from a Rails application to JavaScript. Here I show three techniques: a script tag, a data attribute, and the Gon gem.
(6 minutes)
Testing JavaScript with Jasmine (revised)
The jasminerice gem makes it easy to test your JavaScript with Jasmine in a Rails application. Here I also cover jasmine-jquery and guard-jasmine.
(11 minutes)
Destroy without JavaScript (revised)
A destroy link in Rails does not work without JavaScript. In this episode I show two techniques for gracefully degrading destroy links: button_to and a delete action.
(8 minutes)
Unobtrusive Javascript
Keep JavaScript out of your HTML content with unobtrusive JavaScript. Here I show how Rails 3 works with this best practice.
(13 minutes)
Ember Part 1
Ember.js is a javascript framework for making rich client-side applications. In the first part of this two part series I show how to setup templates, controllers, and routes.
(15 minutes)
Nested Model Form (revised)
Handling multiple models in a single form is easy with accepts_nested_attributes_for. Here you will also learn how to add and remove nested records through JavaScript.
(11 minutes)
Site-Wide Announcements (revised)
Here I show how to add an announcement message at the top of every page in the application and allow the user to permanently hide it. This is all done test-first and even includes testing the JavaScript behavior.
(11 minutes)
Testing JavaScript with Jasmine
Are you testing your JavaScript? Learn how to add specs using Jasmine. This episode also covers jQuery integration with jasmine-jquery.
(15 minutes)