javascript外部使用

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<body><html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>无标题文档</title>
</head>


<script>
alert("My First JavaScript")
</script>

<p id="demo">A Paragraph</p>
<script src="Untitled-3.js">


</script>
<button type="button" onclick="wwz()">这儿</button>
</body>
</html>
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原文地址：https://www.cnblogs.com/lk-kk/p/4484876.html