遅延ロードjsスクリプト
665 ワード
<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title> </title>
<script type="text/javascript" src="ch01.js" defer="defer">
</script>
<script type="text/javascript">
var a = 123;
</script>
</head>
<body>
<div id="d1">defer</div>
</body>
</html>