<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
<div>导航</div>
<div></div>
<script>
var text = document.createElement("p");
var content = document.createTextNode("我是文本")
var id = document.createAttribute("id")
id.value = "root"
// appendChild:将内容或者子元素放在容器中
text.appendChild(content);
text.setAttributeNode(id)
console.log(text);
var container = document.createElement("container");
container.appendChild(text)
</script>
</body>
</html>