v-model and @submit.prevent in Vue
Vue interview exercise on Templates & reactivity, difficulty 1 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 NameForm: a <form> with an <input> bound with v-model, <small class="count">N characters</small>, and a submit <button> disabled while the trimmed name is empty. Submitting the form emits `save` with the trimmed name, prevents the browser's submit (the .prevent modifier), and clears the input.
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.