Compont content is defined via a `_vdom` config, and by procedurally changing the `vdom` property.

We'll go further in-depth with low-level components and vdom later in the course.

<pre style="font-size: 14pt; padding: 8pt; border: solid thin lightgray">
name_: '',

_vdom: {
    tag: 'div',
    style: 'fontWeight:bold',
    html: ''
}

...

afterSetName(name, oldName) {
    this.vdom.html = name;
    this.update();
}
</pre>
