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

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Automatic node finding

Like jQuery with its $ function, Polymer also has a very handy way to locate nodes in the DOM of the page. This recipe shows you how to use it. You can find the code in the project find_nodes.

How to do it...

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

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

  2. The code for find-nodes is defined in find_nodes.dart:
    import'dart.html'; import'package:polymer/polymer.dart'; @CustomTag('find-nodes') classFindnodes extends PolymerElement ...

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