• 코드:
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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 Number Object</title>
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</head>
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​
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<body>
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​
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    <h1>Number 객체</h1>
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​
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    <script>
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        var x = 100;                        // 숫자 리터럴
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        var y = new Number(100);            // Number 객체
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​
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        document.write(x + "<br>");         // 100
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        document.write(y + "<br>");         // 100
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        document.write(typeof x + "<br>");  // number 타입
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        document.write(typeof y + "<br>");  // object 타입
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    </script>
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</body>
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​
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</html>