引入JavaScript脚本
- 可以写在HTML标签中引用
<!doctype html>
<html lang="en">
<head>
<title>JavaScrip</title>
</head>
<body>
<script type="text/javascript">
document.write("Hello JavaScript!<br/>Hi");
</script>
</body>
</html>
- 也可以外部引用
<!doctype html>
<html lang="en">
<head>
<title>JavaScrip</title>
</head>
<body>
<script type="text/javascript">
document.write("Hello JavaScript!<br/>Hi");
</script>
<script src="myjs.js"></script>
</body>
</html>
- 也可以写在标签内
<!doctype html>
<html lang="en">
<head>
<title>JavaScrip</title>
</head>
<body onload="alert('ok')">
hello world;
</body>
</html>