1. <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
  2. <html>
  3. <head>
  4. <title>Sample Code</title>
  5. <script type="text/javascript">
  6. function CheckIPAddress(MyIPAddress)
  7. {
  8. var CheckIP = /^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/;
  9. if(CheckIP.test(MyIPAddress))
  10. {
  11. alert("Your IP Address Is Valid.");
  12. }
  13. else
  14. {
  15. alert("Your IP Address Is Not Valid.");
  16. }
  17. }
  18. </script>
  19. </head>
  20. <body bgcolor=#00ff00 alink=blue vlink=blue>
  21. <FORM name="windowEvent">
  22. IP Address : <input type="text" name="txtipaddress" />
  23. <input type="button" value="Check" name="btnIPAddress" onClick="CheckIPAddress(txtipaddress.value)" />
  24. </FORM>
  25. </body>
  26. </html>