不再犹豫js注释分为单行注释和多行注释：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>js注释</title>
<script>
//1、单行注释
/*
2、多行注释
*/
</script>
</head>
<body>
</body>
</html>
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