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app.js
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// Variables
const formulario = document.querySelector('#form');
const listaTareas = document.querySelector('#task-list');
let lista = [];
// Eventos
cargarEventos();
function cargarEventos() {
formulario.addEventListener('submit', agregarTarea);
listaTareas.addEventListener( 'click', eliminarTarea );
document.addEventListener('DOMContentLoaded', () => {
lista = JSON.parse(localStorage.getItem('lista')) || [];
crearHTML();
})
}
// Funciones
function agregarTarea(e) {
e.preventDefault();
const tarea = document.querySelector('#taskContent').value;
if( tarea === '' ){
mostrarError();
return;
}
const taskObj = {
id: Date.now(),
tarea
}
lista = [...lista, taskObj];
crearHTML();
formulario.reset();
}
function mostrarError(){
const errorPlace = document.querySelector('#todo-container');
const error = document.createElement('p');
error.textContent = 'No se puede agregar tareas vacias';
error.classList.add('error');
errorPlace.appendChild(error);
setTimeout(() => {
error.remove();
}, 3000);
}
function crearHTML(){
limpiarHTML();
lista.forEach( tarea => {
const tareaHTML = document.createElement('li');
const eliminarBtn = document.createElement('a');
tareaHTML.textContent = tarea.tarea;
tareaHTML.classList.add('li-task');
eliminarBtn.textContent = 'X';
eliminarBtn.classList.add('eliminarBtn');
tareaHTML.appendChild(eliminarBtn);
listaTareas.appendChild(tareaHTML);
tareaHTML.dataset.taskId = tarea.id;
});
sincronizarStorage();
}
function sincronizarStorage() {
localStorage.setItem('lista', JSON.stringify(lista));
}
function limpiarHTML() {
while( listaTareas.firstChild ) {
listaTareas.removeChild(listaTareas.firstChild);
}
}
function eliminarTarea(e) {
e.preventDefault();
const id = e.target.parentElement.dataset.taskId;
lista = lista.filter( tarea => tarea.id != id );
limpiarHTML();
crearHTML();
console.log(lista);
}