The following examples are finished code for the Knockout.js tutorials that are located on my blog: End Your If. Below is a list of the articles that are covered in these examples.
(Un)Check All using #KnockoutJS
Creating a Knockout js component
Creating a custom Knockout js data binding
If you're looking for information about JavaScript arrays I've compiled an entire page dedicated with over 10 different examples that will considerably improve your skills with Javascript arrays.