• 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 Predefined Function</title>
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</head>
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​
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<body>
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​
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    <h1>String() 함수</h1>
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​
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    <script>
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        document.write(String(123) + "<br>");
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        document.write(String(123.456) + "<br>");
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        document.write(String("123") + "<br>");
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        document.write(String(new Date()) + "<br>");
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        document.write(String(null) + "<br><br>");
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​
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        document.write(String(true) + "<br>");
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        document.write(String(false) + "<br>");
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        document.write(String(Boolean(1)) + "<br>");
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        document.write(String(Boolean(0)));
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    </script>
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</body>
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​
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</html>