• 코드:
​x
 
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<!DOCTYPE html>
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<html lang="ko">
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​
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<head>
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    <meta charset="UTF-8">
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    <title>JavaScript Object Method</title>
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</head>
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​
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<body>
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​
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    <h1>setter 메소드</h1>
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​
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    <script>
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        var gildong = { age: 18 };
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​
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        gildong.age = 20;
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        document.write(gildong.age + "<br>");   // 20
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​
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        Object.defineProperty(gildong, "changeAge", { set: function(n) { this.age = this.age - n; } });
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        gildong.changeAge = 5;
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        document.write(gildong.age);            // 15
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    </script>
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</body>
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​
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</html>