What language makes the interactive parts of a webpage move and respond?
button.addEventListener("click", async () => { const task = await fetch("/api/task/1") row.textContent = task.done ? "Done" : "Not done"})Handle the click and update the view: JavaScript runs the action prepared for that button, changes the relevant text or state, and the browser redraws that part of the screen.
Wait for server results and read console errors: It can request data over the network. If something goes wrong, the browser Console displays red errors (like TypeError). Copying the exact error to AI is much more effective than just saying 'the page is broken'.
Recognize basic syntax from AI: You don't need to memorize all syntax, but recognizing keywords like const/let (variables), function or => (actions), and if (conditions) helps you understand what AI is doing.
Audit the favorite-button JavaScript: show saving, mark favorited only after success, and restore with retry on failure. Keep permissions and final data validation on the server, then refresh to verify persistence.