<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>菜鸟教程（runoob.com)</title>
<script>
function displayDate(){
document.getElementById("demo").innerHTML=Date();
}
</script>
</head>
<body>
<h1>我的第一个js程序</h1>
<p id="demo">这是一个段落</p>
<button type="button" onclick="dispalydate()">显示日期</butto>
<body>
</html>
function displayDate(){
document.getElementById("demo").innerHTML=Date();
}
</script>
<button type="button" onclick="displayDate()">显示日期</butto>