• 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>reduceRight() 메소드</h1>
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​
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    <script>
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        var arr = [1, 2, 3, 4, 5];
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        function sumOfValues(x, y) {
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            return x - y;
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        }
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​
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        document.write(arr.reduceRight(sumOfValues));   // 5 - 4 - 3 - 2 - 1 = -5
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    </script>
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</body>
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​
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</html>