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Dart: Scalable Application Development by Ivo Balbaert, Sergey Akopkokhyants, Davy Mitchell

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Event handling

In this recipe, we will show you how to handle events in a Polymer component. You can find the code in the project event_handling.

How to do it...

  1. The script starts with web\index.html, where a component with the name pol-select is imported through the following line:
    <link rel="import"href="pol_events.html">

    From this, we know that the component is defined in pol_events.html, and the code behind it is in a file named pol_events.dart. For a discussion of the other tags, refer to the first recipe.

  2. The code for pol-events is defined in pol_events.dart:
    import'package:polymer/polymer.dart'; @CustomTag('pol-events') classPolevents extends PolymerElement { @observable String which_event = "no event"; @observable String thing = ""; @observable ...

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