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app.js
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app.js
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//selectors
const todoInput = document.querySelector(".todo-input");
const todoButton = document.querySelector(".todo-btn");
const todoList = document.querySelector(".todo-list");
const filterOption = document.querySelector("#filter-todo");
//Event listeners
document.addEventListener('DOMContentLoaded', getTodos);
todoButton.addEventListener('click', addTodo)
todoList.addEventListener('click', deleteCheck);
filterOption.addEventListener('click', filterTodo);
//functions
function addTodo(event){
//prevent from submitting
event.preventDefault();
//todo div
const todoDiv = document.createElement('div');
todoDiv.classList.add("todo");
//create LI
const newTodo = document.createElement('li');
newTodo.innerText =todoInput.value;
newTodo.classList.add('todo-item');
todoDiv.appendChild(newTodo);
//add todo list to the local storage
saveLocalTodos(todoInput.value);
//check button
const completeBtn = document.createElement('button');
completeBtn.innerHTML = '<i class="fas fa-check"></i>'
completeBtn.classList.add("complete_btn");
todoDiv.appendChild(completeBtn);
//bin button
const binBtn = document.createElement('button');
binBtn.innerHTML = '<i class="fas fa-trash"></i>'
binBtn.classList.add("bin_btn");
todoDiv.appendChild(binBtn);
//append to the list
todoList.appendChild(todoDiv);
//clear the value from the input after an item been add.
todoInput.value = "";
}
function deleteCheck(e){
const item = e.target;
//delete todo
if(item.classList[0] === "bin_btn"){
const todo = item.parentElement;
todo.classList.add("fall");
removeLocalTodos(todo);
todo.addEventListener('transitionend', function(){
todo.remove();
});
}
if(item.classList[0] === "complete_btn"){
const todo = item.parentElement;
todo.classList.toggle("completed");
}
}
function filterTodo(e){
const todos = todoList.childNodes;
todos.forEach(function(todo){
switch(e.target.value){
case "all":
todo.style.display = "flex";
break;
case "completed":
if (todo.classList.contains("completed")) {
todo.style.display = "flex";
}else {
todo.style.display = "none";
}
break;
case "uncompleted":
if (!todo.classList.contains("completed")){
todo.style.display = "flex";
}else{
todo.style.display = "none";
}
break;
}
});
}
function saveLocalTodos(todo){
//check if there are any items in the list.
let todos;
if(localStorage.getItem("todos") === null){
todos = [];
} else{
todos = JSON.parse(localStorage.getItem("todos"));
}
todos.push(todo);
localStorage.setItem("todos", JSON.stringify(todos));
}
function getTodos(){
let todos;
if(localStorage.getItem("todos") === null){
todos =[];
}else{
todos = JSON.parse(localStorage.getItem("todos"));
}
todos.forEach(function(todo){
//todo div
const todoDiv = document.createElement('div');
todoDiv.classList.add("todo");
//create LI
const newTodo = document.createElement('li');
newTodo.innerText = todo;
newTodo.classList.add('todo-item');
todoDiv.appendChild(newTodo);
//check button
const completeBtn = document.createElement('button');
completeBtn.innerHTML = '<i class="fas fa-check"></i>'
completeBtn.classList.add("complete_btn");
todoDiv.appendChild(completeBtn);
//bin button
const binBtn = document.createElement('button');
binBtn.innerHTML = '<i class="fas fa-trash"></i>'
binBtn.classList.add("bin_btn");
todoDiv.appendChild(binBtn);
//append to the list
todoList.appendChild(todoDiv);
});
}
function removeLocalTodos(todo){
let todos;
if(localStorage.getItem("todos") === null){
todos =[];
}else{
todos = JSON.parse(localStorage.getItem("todos"));
}
const todoIndex = todo.children[0].innerText;
todos.splice(todos.indexOf(todoIndex), 1);
localStorage.setItem("todos", JSON.stringify(todos));
}