It’s pretty fair to say that JavaScript is not a fad; it is by far the most widespread programming language out there and also the most available runtime we have, ranging from toasters to the web, and even to the backend development through Node.js. Its probably also fair to say that we should really embrace it and start treating it like a first class citizen of our day to day work. In this talk, Einar will take you on a tour of how you can work with JavaScript with similar patterns you’re already used to from the rest of your server code. Writing tests or specifications that proves your code is also important, Einar will show how to get started with this and how you can achieve more testable JavaScript by applying patterns like MVVM (Model View ViewModel) using KnockoutJS

2. Its Primetime: a JavaScript story
Power point template by
Colin Eberhardt

3. Agenda
Modules
MVVM
Decoupling in the client
Testing JavaScript

4. Who am I
Einar Ingebrigtsen
@einari einar@dolittle.com
http_//www.dolittle.com
http://blog.dolittle.com
http://www.ingebrigtsen.info

6. Confession time..
I am a recovering JavaScript hater

7. Houston we have a….
There are only two problems with
JavaScript

8. Java
&
Script

9. … actually, there is a third problem…
DDD
DOM Driven Development

10. … and kinda, a fourth problem as well..
People thinking that we
need to fix JavaScript

11. … it all begins with $

12. … it all begins with $
Polluted CSS selectors
Passive views
Hard to test
Heavy coupling
Couples JavaScript (business logic) to DOM

13. MVVM
Based on Presentation Model by Martin Fowler
http://martinfowler.com/eaaDev/PresentationModel.html
Commonly used in the XAML stack
WPF
Silverlight
WP7
WP8
Windows RT / Store Apps

14. MVVM
Model Get from server
View
Observes
Observable
ViewModel

15. Decouple
Make many small applications
Compose together

16. EventAggregator
ViewModel ViewModel

19. JavaScript: The Good Parts

20. Summary
KnockoutJS
http://knockoutjs.com
RequireJS
http://requirejs.org
Forseti
http://github.com/dolittle/forseti
Bifrost
http://bifrost.dolittle.com
Please rate the talk at
http://tinyurl.com/JavaScriptStory
http://blog.dolittle.com http://bifrost.dolittle.com

21. Thanks for your
attention