A Game of Darts, Target 7: Defining a Custom DOM Tag Using Dart's Web UI Package and Web Components

The Game of Dart tutorials provide a gentle introduction to building web applications using the Dart language, tools, and APIs.  In the latest tutorial, learn how to make custom DOM elements using the <element> tag, use data binding to connect Dart variables to content, and attach event handlers in HTML using the Web UI package. 

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