<![CDATA[
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>전역객체 메서드 사용하기</title>
<link rel="stylesheet" href="style_js.css">
<body>
<script>
const jud = window.confirm("confirm()에서 window.가 생략된 것을 이해했나요?");
document.write("전역객체 속성 이해했음: " + jud + "<hr>");
document.write("isNaN(1) = " + isNaN(1) + "<hr>");
document.write("isNaN('0.5') = " + isNaN('0.5') + "<hr>");
document.write("isNaN('str') = " + isNaN('str') + "<hr>");
document.write("eval(3 * 4) = " + eval(3 * 4));
</script>
</body>
</html>
]]>