1. <html>
  2. <head>
  3. <title>Sample Code</title>
  4. <script type="text/javascript">
  5. function CheckFloatingPoint(ValueNumeric)
  6. {
  7. var objRegex = /(^-?\d\d*\.\d\d*$)|(^-?\.\d\d*$)/;
  9. //check for numeric characters
  10. if(objRegex.test(ValueNumeric))
  11. {
  12. alert("Your Given Input \""+ValueNumeric+"\" Is Correct.");
  13. }
  14. else
  15. {
  16. alert("Your Given Input\""+ValueNumeric+"\" Is Not Correct.");
  17. }
  18. }
  19. </script>
  20. </head>
  21. <body bgcolor=#00ff00 alink=blue vlink=blue>
  22. <FORM name="windowEvent">
  23. Number : <input type="text" name="txtnumber" />
  24. <input type="button" value="Check Floating Point" name="btnCheckFloatingPoint" onClick="CheckFloatingPoint(txtnumber.value)" />
  25. </FORM>
  26. </body>
  27. </html>