abstract：<!DOCTYPE html><html><head> <meta charset="UTF-8"> <title>使用css选择器来获取元素</title></head><body><ul id=&quo
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>使用css选择器来获取元素</title>
</head>
<body>
<ul id="ul">
<li>列表项01</li>
<li>列表项02</li>
<li>列表项03</li>
<li>列表项04</li>
<li class="coral large">列表项05</li>
</ul>
<script>
let lists = document.querySelectorAll('li');
console.log(lists);
lists[0].style.backgroundColor = 'coral';
lists.item(1).style.backgroundColor = 'lightblue';
//该方法还可以在元素上调用,这也根据标签和class类名获取元素是一样的
let ul = document.querySelector('#ul');
console.log(ul);
let li = ul.querySelectorAll('.green');
for (let i = 0; i < li.length; i++) {
li[i].style.backgroundColor = 'green';
}
</script>
</body>
</html>
Correcting teacher：查无此人Correction time：2019-04-27 17:36:40
Teacher's summary：完成的不错。js比较复杂，要耐心学习。继续加油