<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="main.js"></script>
</head>
<body>
<script>
var exam = {"kor":30, "eng":70, "math":80};
alert(exam.kor + exam.eng); //100 출력된다.
var ar = [3,4,5,6,exam,[7,8,9]];
console.log(ar[5][1]); //8 출력
var notice = {"id":1, "title":"hello"};
console.log(notice.title); //hello 출력
</script>
</body>
</html>
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