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From Wet Horse, 4 Years ago, written in Plain Text.
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  1. <html>
  2. <head>
  3. </head>
  4.  
  5. <body>
  6. <script type="text/javascript">
  7. function sumValues()
  8. {
  9.   var num1 = document.getElementById("txtnum1").value;
  10.   var num1b = parseFloat(num1);
  11.   var num2 = document.getElementById("txtnum2").value;
  12.   var num2b = parseFloat(num2);
  13.   var res = num1b + num2b;
  14.   document.getElementById("txtres").value = res;
  15.  
  16. alert(num1b + "   " + num2b);
  17. }
  18. </script>
  19.  
  20.  
  21. <form name="formcalc">
  22. <input type="text" id="txtnum1"><br>
  23. <input type="text" id="txtnum2"><br>
  24.  
  25. <input type="button" value="Calculate" onClick="sumValues()"><br>
  26. <input type="text" id="txtres"><br>
  27. </form>
  28. </body>
  29. </html>