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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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...
- The script starts with
web\index.html, where a component with the namepol-selectis 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 namedpol_events.dart. For a discussion of the other tags, refer to the first recipe. - The code for
pol-eventsis defined inpol_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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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.