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

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

<body>

	<h1>instanceof 연산자</h1>

	<script>
		var arr = [1, true, "JavaScript"];					// 배열 생성

		document.write((arr instanceof Array) + "<br>");	// true
		document.write(123 instanceof Array);				// false
	</script>
	
</body>

</html>

​x
 
<!DOCTYPE html>
<html lang="ko">
​
<head>
    <meta charset="UTF-8">
    <title>JavaScript Array</title>
</head>
​
<body>
​
    <h1>instanceof 연산자</h1>
​
    <script>
        var arr = [1, true, "JavaScript"];                  // 배열 생성
​
        document.write((arr instanceof Array) + "<br>");    // true
        document.write(123 instanceof Array);               // false
    </script>
    
</body>
​
</html>