【JS】节点操作-1
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>d24c04429</title>
</head>
<body>
<div>
<ul>
<span>我是span</span>
<li>我是li1</li>
<li>我是li2</li>
<li>我是li3</li>
<li>我是li4</li>
</ul>
</div>
<div class="demo">
<div class="box">
<span class="erweima">8</span>
</div>
</div>
<script>
var erweima = document.querySelector('.erweima');
var div = document.querySelector('div');
console.log(erweima.parentNode);
var ul = document.querySelector('ul');
console.log(ul.childNodes[1].nodeType);
console.log(ul.children[1].nodeType);
console.log(ul.firstChild);
console.log(ul.firstElementChild);
console.log(ul.lastChild);
console.log(ul.lastElementChild);
console.log(ul.previousSibling);
console.log(ul.previousElementSibling);
console.log(ul.nextSibling);
console.log(ul.nextElementSibling);
</script>
</body>
</html>
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