i am trying to doing input validation its my complete code but it is not working well.
Testing Validation function getvalue() { value = document.getElementById('myId').value; if(value 'z' || value != '@' && value != '.') { alert("Not a valid E-mail adress"); }<html> <head> <title>Testing Validation</title> <script type = "text/javascript"> function getvalue() { value = document.getElementById('myId').value; if(value < 'a' || value > 'z' || value != '@' && value != '.') { alert("Not a valid E-mail adress"); } } </script> </head> <body> <form name = "frm"> <input type="text" name="input" size="40" id="myId" /> <input type = "submit" name = "submit" onclick="getvalue()" /> </form> </body> </html> 
