<html> <head> <title>A Simple Form with JavaScript Validation</title> <script type="text/javascript"> <!-- function validate_form ( ) { valid = true; if ( document.contact_form.contact_name.value == "" ) { alert ( "Please fill in the 'Your Name' box." ); valid = false; } if ( document.contact_form.contact_name.value != "" ) { alert ( "Succesfull" ); valid = false; } return valid; } //--> </script> </head> <body bgcolor="#FFFFFF"> <form name="contact_form" method="post" onSubmit="return validate_form ( );"> <h1>Please Enter Your Name</h1> <p>Your Name: <input type="text" name="contact_name"></p> <p><input type="submit" name="send" value="Send Details"></p> </form> </body> </html>