June 2017
Intermediate to advanced
873 pages
18h 9m
English
Content preview from Dart: Scalable Application DevelopmentBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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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:
Custom attributes ...
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