Text editor is probably not the best example. I'm thinking of the typical web app with "data lifecycle" as the article calls it, where there is rich interactivi

Text editor is probably not the best example. I'm thinking of the typical web app with "data lifecycle" as the article calls it, where there is rich interactivity and content is updated frequently based on interactions. In those cases you have components listening on local and global scope, updating of state, and updating of the rendering frame (handled by the browser).