• 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 Array 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>shift() 메소드</h1>
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​
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    <script>
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        var arr = [1, true, "JavaScript", "자바스크립트"];
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​
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        document.write(arr.length + "<br>");    // 4
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        document.write(arr.shift() + "<br>");   // 1
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        document.write(arr.length + "<br>");    // 3
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        document.write(arr.shift() + "<br>");   // true
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        document.write(arr.length + "<br>");    // 2
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        document.write(arr);                    // [JavaScript,자바스크립트]
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    </script>
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</body>
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​
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</html>