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

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

<body>

	<h1>unshift() 메소드</h1>

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

		document.write(arr.length + "<br>");	// 3
		arr.unshift("자바스크립트");
		document.write(arr.length + "<br>");	// 4
		document.write(arr + "<br><br>");		// [자바스크립트,1,true,JavaScript]

		arr.unshift(2, "거짓");
		document.write(arr.length + "<br>");	// 6
		document.write(arr);					// [2,거짓,자바스크립트,1,true,JavaScript]
	</script>
	
</body>

</html>

​x
 
<!DOCTYPE html>
<html lang="ko">
​
<head>
    <meta charset="UTF-8">
    <title>JavaScript Array Object</title>
</head>
​
<body>
​
    <h1>unshift() 메소드</h1>
​
    <script>
        var arr = [1, true, "JavaScript"];
​
        document.write(arr.length + "<br>");    // 3
        arr.unshift("자바스크립트");
        document.write(arr.length + "<br>");    // 4
        document.write(arr + "<br><br>");       // [자바스크립트,1,true,JavaScript]
​
        arr.unshift(2, "거짓");
        document.write(arr.length + "<br>");    // 6
        document.write(arr);                    // [2,거짓,자바스크립트,1,true,JavaScript]
    </script>
    
</body>
​
</html>