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【JavaScript】税込み価格を計算する関数including_taxを作成せよ

JavaScript

Posted at 2021-05-08

<!DOCTYPE html>
<html lang="ja">
<head>
   <meta charset="UTF-8">
   <title>関数課題</title>
</head>
<body>
   <script>
       // 税抜き価格を定義
       var price = window.prompt('<p>税抜き価格を入力してください<p>');
 
       // 関数including_taxを実行する
       function including_tax(price) {
        price = price  * 1.08;
        price = Math.floor(price);
        document.write('税込み価格は' + price + 'です');
       }
 
       // 税込み価格を計算する関数including_taxを作成する
       including_tax(price);
   </script>
</body>
</html>

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