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DART Cookbook

DART Cookbook

By : Ivo Balbaert
4 (2)
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DART Cookbook

DART Cookbook

4 (2)
By: Ivo Balbaert

Overview of this book

If you are a Dart developer looking to sharpen your skills, and get insight and tips on how to put that knowledge into practice, then this book is for you. You should also have a basic knowledge of HTML, and how web applications with browser clients and servers work, in order to build dynamic Dart applications.
Table of Contents (13 chapters)
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12
Index

Using custom attributes and template conditionals

In this recipe, we will explore two polymer.dart features:

  • Custom attributes: Like HTML attributes for normal tags, these are attributes for your Polymer component, and they can be changed in the code
  • Template conditionals: The UI can be controlled by declarative conditions of the form <template if={{condition}}></template>, where a condition is an expression involving observed or published variables

You can find the code in the project custom_attrib.

How to do it...

In this example, we simulate an oven, with the temperature as its attribute. We show the temperature in a textual form, and also test the temperature to display an appropriate message, as shown in the following screenshot:

How to do it...

Custom attributes and template conditionals

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

    This component is used...

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Tech Concepts
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Programming languages
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DART Cookbook
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