菜鸟教程在线编辑器

AI 编程工具
 
                <!DOCTYPE html>
<html>
<head> 
<meta charset="utf-8"> 
<title>菜鸟教程(runoob.com)</title> 
<style>
body {background-color:yellow; color:red;}
</style>
</head>
<body>

<p>点击按钮显示文档的 style 属性。</p>
<p id="demo"></p>
<button onclick="myFunction()">尝试一下</button>
<script>
function myFunction(){
	var x = document.getElementsByTagName("STYLE")[0];
	document.getElementById("demo").innerHTML = x.innerHTML;
};
</script>

</body>
</html>
              