mirror of
https://github.com/microsoft/frontend-bootcamp.git
synced 2026-01-26 14:56:42 +08:00
87 lines
2.6 KiB
HTML
87 lines
2.6 KiB
HTML
<!DOCTYPE html>
|
|
<html>
|
|
<link rel="stylesheet" href="./style.css" />
|
|
<body>
|
|
<h1>todos</h1>
|
|
<input class="textfield" placeholder="add todo" />
|
|
<button onclick="addTodo()" class="button add">
|
|
Add
|
|
</button>
|
|
<div class="filter">
|
|
<button onclick="filter('all', this)" class="selected">all</button>
|
|
<button onclick="filter('active', this)">active</button>
|
|
<button onclick="filter('completed', this)">completed</button>
|
|
</div>
|
|
<ul class="todos">
|
|
<li class="todo">
|
|
<label><input type="checkbox" /> Todo 1</label>
|
|
</li>
|
|
<li class="todo">
|
|
<label><input type="checkbox" /> Todo 2</label>
|
|
</li>
|
|
<li class="todo">
|
|
<label><input type="checkbox" /> Todo 3</label>
|
|
</li>
|
|
<li class="todo">
|
|
<label><input type="checkbox" /> Todo 4</label>
|
|
</li>
|
|
</ul>
|
|
<footer>
|
|
<span><span class="remaining">4</span> items left</span>
|
|
<button onclick="clearCompleted()" class="button">Clear Completed</button>
|
|
</footer>
|
|
</body>
|
|
|
|
<script type="text/javascript">
|
|
function getValue(selector) {
|
|
const inputValue = document.querySelector(selector).value;
|
|
return inputValue;
|
|
}
|
|
|
|
function clearInput(selector) {
|
|
document.querySelector(selector).value = '';
|
|
}
|
|
|
|
function updateRemaining() {
|
|
const remaining = document.querySelector('.remaining');
|
|
const todos = document.querySelectorAll('.todo').length;
|
|
remaining.innerText = todos;
|
|
}
|
|
|
|
function addTodo() {
|
|
const todo = document.querySelector('.todo');
|
|
const newTodo = todo.cloneNode();
|
|
newTodo.innerHTML = `<label><input type="checkbox" /> ${getValue('.textfield')}</label>`;
|
|
todo.parentElement.insertBefore(newTodo, todo);
|
|
|
|
clearInput('.textfield');
|
|
updateRemaining();
|
|
}
|
|
|
|
function clearCompleted() {
|
|
const todos = document.querySelectorAll('.todo');
|
|
for (let todo of todos) {
|
|
if (todo.querySelector('input').checked == true) {
|
|
todo.remove();
|
|
}
|
|
}
|
|
updateRemaining();
|
|
}
|
|
|
|
function filter(scope, button) {
|
|
document.querySelector('.active').classList.remove('active');
|
|
button.classList.add('active');
|
|
for (let todo of document.querySelectorAll('.todo')) {
|
|
const checked = todo.querySelector('input').checked == true;
|
|
if (scope == 'all') {
|
|
todo.hidden = false;
|
|
} else if (scope == 'active') {
|
|
todo.hidden = checked;
|
|
} else if (scope == 'completed') {
|
|
todo.hidden = !checked;
|
|
}
|
|
}
|
|
}
|
|
</script>
|
|
</html>
|