动态跳转
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>JS</title>
</head>
<body>
<div id="box">
<button class="btn">按钮</button>
<span id="span">
<a href="#">百度一下</a>
</span>
<p>我是段落</p>
</div>
<script type="text/javascript">
console.log("1");
//动态跳转
window.location.href = "http://www.baidu.com";
console.log("2");
console.log(document); //获取整个网页的document对象
console.log(document.childNodes); //获取网页中的document的所有子节点
console.log(document.head); //获取头部
console.log(document.body); //获取body
console.log(document.title); //获取title
</script>
</body>
</html>