That's enough for now. At this point, not only can we mark todos as complete, but we can clear them as well. Now the only thing left to wire up the footer are the three Filtering links: "All", "Active", and "Completed". We'll do that in the next article, using Routing.... Filters for all, active, and completed...incomplete() { return this.todos.filter((todo) => !todo.isCompleted);...