const tareaInput = document.getElementById('tarea'); const agregarBtn = document.getElementById('agregar'); const listaTareas = document.getElementById('lista-tareas'); agregarBtn.addEventListener('click', () => { const tarea = tareaInput.value.trim(); if (tarea === '') { return; } const li = document.createElement('li'); li.textContent = tarea; listaTareas.appendChild(li); tareaInput.value = ''; });