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contoh.js
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contoh.js
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const todos = [];
const RENDER_EVENT = 'render-todo';
document.addEventListener('DOMContentLoaded', function () {
const submitForm = document.getElementById('form');
submitForm.addEventListener('submit', function (event) {
event.preventDefault();
addTodo();
function addTodo() {
const textTodo = document.getElementById('title').value;
const timestamp = document.getElementById('date').value;
const generatedID = generateId();
const todoObject = generateTodoObject(generatedID, textTodo, timestamp, false);
todos.push(todoObject);
document.dispatchEvent(new Event(RENDER_EVENT));
}
function generateId() {
return +new Date();
}
function generateTodoObject(id, task, timestamp, isCompleted) {
return {
id,
task,
timestamp,
isCompleted
}
}
document.addEventListener(RENDER_EVENT, function () {
console.log(todos);
});
});
});
// =============================================================
function makeTodo(todoObject) {
const textTitle = document.createElement('h2');
textTitle.innerText = todoObject.task;
const textTimestamp = document.createElement('p');
textTimestamp.innerText = todoObject.timestamp;
const textContainer = document.createElement('div');
textContainer.classList.add('inner');
textContainer.append(textTitle, textTimestamp);
const container = document.createElement('div');
container.classList.add('item', 'shadow');
container.append(textContainer);
container.setAttribute('id', `todo-${todoObject.id}`);
if (todoObject.isCompleted) {
const undoButton = document.createElement('button');
undoButton.classList.add('undo-button');
undoButton.addEventListener('click', function () {
undoTaskFromCompleted(todoObject.id);
});
const trashButton = document.createElement('button');
trashButton.classList.add('trash-button');
trashButton.addEventListener('click', function () {
removeTaskFromCompleted(todoObject.id);
});
function removeTaskFromCompleted(todoId) {
const todoTarget = findTodoIndex(todoId);
if (todoTarget === -1) return;
todos.splice(todoTarget, 1);
document.dispatchEvent(new Event(RENDER_EVENT));
}
function undoTaskFromCompleted(todoId) {
const todoTarget = findTodo(todoId);
if (todoTarget == null) return;
todoTarget.isCompleted = false;
document.dispatchEvent(new Event(RENDER_EVENT));
}
function findTodoIndex(todoId) {
for (const index in todos) {
if (todos[index].id === todoId) {
return index;
}
}
return -1;
}
container.append(undoButton, trashButton);
} else {
const checkButton = document.createElement('button');
checkButton.classList.add('check-button');
checkButton.addEventListener('click', function () {
addTaskToCompleted(todoObject.id);
});
container.append(checkButton);
}
return container;
}
// ============================================
function addTaskToCompleted (todoId) {
const todoTarget = findTodo(todoId);
if (todoTarget == null) return;
todoTarget.isCompleted = true;
document.dispatchEvent(new Event(RENDER_EVENT));
}
function findTodo(todoId) {
for (const todoItem of todos) {
if (todoItem.id === todoId) {
return todoItem;
}
}
return null;
}
document.addEventListener(RENDER_EVENT, function () {
const uncompletedTODOList = document.getElementById('todos');
uncompletedTODOList.innerHTML = '';
const completedTODOList = document.getElementById('completed-todos');
completedTODOList.innerHTML = '';
for (const todoItem of todos) {
const todoElement = makeTodo(todoItem);
if (!todoItem.isCompleted)
uncompletedTODOList.append(todoElement);
else
completedTODOList.append(todoElement);
}
});