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  • Tutorial - A Simple IoC Component

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This tutorial is based on the "Five-Star widget" code that is used as part of our Keyboard Accessibility Demo. It assumes that:

  • you are already familiar with HTML, Javascript and CSS,
  • you're familiar with Inversion of Control (IoC) in general,
  • you want to see how the Infusion Framework uses IoC in a component.

While the "Five-Star widget" is used in a demo of our Keyboard Accessibility jQuery plugin, it is, by itself, a fine example of an IoC component, and it's not necessary to know about the plugin to follow this tutorial.


The Five-Star Widget is a simple component that allows users to "rank" something. The widget displays 5 stars and responds to user selection, internally storing the selection. In our Keyboard Accessibility Plugin demo, it's used to rank images in an image viewer, but it could be incorporated into a movie database, restaurant review site, etc.

The code for the Five-Star Widget embodies one of the main goals of the Infusion Framework's Inversion of Control system: To reduce component creation to (ideally) configuration information only.


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