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PODynamically add a web component to a div
 

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    <p>I started with the generating click-counter example. I made the click-counter into a library which I then imported into my main file. The click-counter component can be added manually by putting the appropriate HTML into the web page before running the program. However, I've been unable to find a way to dynamically add the click-counter web component to a div. My attempts have either ended in "Aw, snap!" errors or simply with nothing happening.</p> <p>The click-counter (xclickcounter.dart):</p> <pre class="lang-dart prettyprint-override"><code>library clickcounter; import 'package:web_ui/web_ui.dart'; class CounterComponent extends WebComponent { int count = 0; void increment() { count++; } } </code></pre> <p>The main HTML:</p> <pre class="lang-html prettyprint-override"><code>&lt;!DOCTYPE html&gt; &lt;html&gt; &lt;head&gt; &lt;meta charset="utf-8"&gt; &lt;title&gt;Sample app&lt;/title&gt; &lt;link rel="stylesheet" href="test1.css"&gt; &lt;!-- import the click-counter --&gt; &lt;link rel="components" href="xclickcounter.html"&gt; &lt;/head&gt; &lt;body&gt; &lt;h1&gt;Test1&lt;/h1&gt; &lt;p&gt;Hello world from Dart!&lt;/p&gt; &lt;div id="sample_container_id"&gt; &lt;div is="x-click-counter" id="click_counter" count="{{startingCount}}"&gt;&lt;/div&gt; &lt;/div&gt; &lt;script type="application/dart" src="test1.dart"&gt;&lt;/script&gt; &lt;script src="packages/browser/dart.js"&gt;&lt;/script&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>main file:</p> <pre class="lang-dart prettyprint-override"><code>import 'dart:html'; import 'package:web_ui/web_ui.dart'; import 'xclickcounter.dart'; // initial value for click-counter int startingCount = 5; void main() { // no error for adding an empty button var button = new ButtonElement(); query('#sample_container_id').append(button); // doesn't work (gives "Aw, snap!" in Dartium) query('#sample_container_id').append(new CounterComponent()); // Nothing happens with this code. Nothing appears. // But I promise this same thing was giving Aw, Snap // for a very similar program final newComponentHtml = '&lt;div is="x-click-counter"&gt;&lt;/div&gt;'; query('#sample_container_id').appendHtml(newComponentHtml); } </code></pre> <p>I tried added an empty constructor to click-counter but it still crashes. </p>
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