Верстка:
<div class="wrapper"> <div class="header"> <h1>Список дел</h1> <input type="text" placeholder="Введите новое дело..." id="toDoEl"> <span class="addBtn" onclick="newElement()">Добавить</span> </div> <ul id="list"> </ul> </div>
Стили CSS:
* {
box-sizing: border-box; }
.wrapper {width: 920px; margin: 0 auto}
ul { margin: 0; padding: 0; list-style: none; }
ul li { cursor: pointer; position: relative; padding: 12px 8px 12px 40px; background: #eee; font-size: 18px; transition: 0.2s; -webkit-user-select: none; -moz-user-select: none; -ms-user-select: none; user-select: none; }
ul li:nth-child(odd) { background: #f9f9f9; }
ul li:hover { background: #ddd; }
ul li.checked { background: #888; color: #fff; text-decoration: line-through; }
ul li.checked::before { content: ''; position: absolute; border-color: #fff; border-style: solid; border-width: 0 2px 2px 0; top: 10px; left: 16px; transform: rotate(45deg); height: 15px; width: 7px; }
.close { position: absolute; right: 0; top: 0; padding: 12px 16px 12px 16px; }
.close:hover { background-color: #f44336; color: white; }
.header { background-color: #000; padding: 30px 40px; color: white; text-align: center; }
.header:after { content: ""; display: table; clear: both; }
input { border: none; width: 75%; padding: 10px; float: left; font-size: 16px; }
.addBtn { padding: 10px; width: 25%; background: #d9d9d9; color: #555; float: left; text-align: center; font-size: 16px; cursor: pointer; transition: 0.3s; }
.addBtn:hover { background-color: #bbb; }
Скрипт:
var list = document.querySelector('ul'); list.addEventListener('click', function (ev) { if(ev.target.tagName === "LI") { ev.target.classList.toggle('checked'); } else if(ev.target.tagName === "SPAN") { var div = ev.target.parentNode; div.remove(); } }, false);
function newElement() { var li = document.createElement('li'); var inputValue = document.getElementById('toDoEl').value; var t = document.createTextNode(inputValue); li.appendChild(t); if(inputValue == "") { alert("Введите ваше дело!"); } else { document.getElementById('list').appendChild(li); } document.getElementById('toDoEl').value = ""; var span = document.createElement('SPAN'); var txt = document.createTextNode("X"); span.className = "close"; span.appendChild(txt); li.appendChild(span); }
Подробнее в формате видео: