Scoped slots in Vue
Vue interview exercise on Slots & dynamic components, difficulty 2 of 3. Solve it in the editor beside a worked example, or cold in Interview mode with the example hidden; the tests run the moment you do.
Write DataList with a prop `items` ({ id, label }[]): a <ul> with one <li> per item (keyed by id) holding the default slot, which receives `item` and `index` and falls back to the label; when there are no items, render the `empty` slot instead of the list, with the fallback text "No items".
Each exercise pairs a worked example with a twin problem to solve in a real editor; the tests run the moment you do. Interview mode hides the example: solve it from memory, without the hint or the solution, and it counts as solved cold. Progress is saved in your browser, and in your account if you sign in.