Example of Dart HTML5 usage

main.dart

import 'dart:html';

final ButtonElement $button = querySelector('#button');
final Iterable<AnchorElement> $links = querySelectorAll('a:not(.active)');

void main() {
  $button.onClick.listen((_) {
    window.alert('Hello, world!');
  });
  
  $links.forEach(($link) {
    $link.onClick.listen((Event e) {
      e.preventDefault();
      window.console.info('Clicked ${$link.attributes['href']}');
    });
  });
}