You could do that with angularjs 1.5 components too. But afaik it was/is not standard practice to embed html and css inside your js, because many (most?) edito

You could do that with angularjs 1.5 components too. But afaik it was/is not standard practice to embed html and css inside your js, because many (most?) editors treat html inside a string as a string instead of as html.