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azunyashka Feb 5th, 2017 77 Never
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  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4.     <meta charset="UTF-8">
  5.     <link type="text/css" rel="stylesheet" href="stylesheet.css"/>
  6.     <title>Simple Calculator</title>
  7. </head>
  8. <body>
  9.  <script type="text/javascript">
  10.      function Go() {
  11.          var first = +(document.getElementById('FirstNumber').value);
  12.          var second = +(document.getElementById('SecondNumber').value);
  13.          var action = document.getElementById('Action').value;
  14.          var res;
  15.          alert(res);
  16.          alert(action);
  17.           switch (action) {
  18.               case 'sum' :
  19.                   res == +first + +second;
  20.                   break;
  21.               case 'minus' :
  22.                   res == +first - +second;
  23.                   break;
  24.               case 'multi' :
  25.                   res == +first * +second;
  26.                   break;
  27.               case 'div' :
  28.                   res == +first / +second;
  29.                   break;
  30.               default :
  31.                   alert('error');
  32.           }
  33.          alert(res);
  34.          alert(action);
  35.  
  36.  
  37.      }
  38.  </script>
  39.  <input type="text"  value="0" name="first">
  40.  <input type="text"  value="0" name="second">
  41.  <p>
  42.      <input type="radio"  value="sum" name="action"> Сумма
  43.      <input type="radio"  value="minus" name="action"> Вычитание
  44.      <input type="radio"  value="multi" name="action"> Умножение
  45.      <input type="radio"  value="div" name="action"> Деление
  46.  </p>
  47.  <input type="button" value="Go" id="Go" onclick="Go()" >
  48. </body>
  49. </html>
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