We return to our articles on how Dart treats HTML elements. We will see collections, constructors and events. (See Part 1)

3.- Collections

Objects returned by elements, nodes y query() that correspond to implementations of collecions will be Dart collections. They will be Dart lists, maps y sets.

Instead of a bunch of different methods, are all part of Dart attributes map, easier to treat and remember.

// Javascript:                       // Dart:
elem.hasAttribute('name');           elem.attributes.contains('name');
elem.getAttribute('name');           elem.attributes['name'];
elem.setAttribute('name', 'value');  elem.attributes['name'] = 'value';
elem.removeAttribute('name');        elem.attributes.remove('name');

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How does Dart interact withHTML elements?

Many of you may wonder where is the HTMLcomponent Dart. How I can access HTMLelements as javascript does?

In the article Improving the DOM by Bob Nystrom en Dartlang explain how they created the system to perform these tasks.

Let’s see.

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