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<!DOCTYPE html>
<html lang="ko">

<head>
	<meta charset="UTF-8">
	<title>JavaScript Object Method</title>
</head>

<body>

	<h1>setter 메소드</h1>

	<script>
		var gildong = { age: 18 };

		gildong.age = 20;
		document.write(gildong.age + "<br>");	// 20

		Object.defineProperty(gildong, "changeAge", { set: function(n) { this.age = this.age - n; } });
		gildong.changeAge = 5;
		document.write(gildong.age);			// 15
	</script>
	
</body>

</html>