Web Form Validation Script

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Web Form Validation Script

Form Validation Script

 

Summary of tests

  • First Name – This is a required field and it will be validated when it loses focus… error will be reported via alert message… This uses the basic RequiredValidator.
  • Middle Name – This is a required field and it will be validated when it loses focus… error will be reported by inserting a message into a div below the form… this uses the basic RequiredValidator.
  • Last Name – This is a field that requires a minimum sized entry (5 characters) and it will be validated every time a key is pressed and released. Note that this field starts up invalid (its label it highlighted in red) and will be made valid by entering 5 characters or more (label will revert to black) and will be made invalid again if the length falls below this minimum… This uses the basic MinLengthValidator.
  • Date Of Birth – This is a field that must be entered in the form MM/DD/YYYY and is validated when it loses focus… error will be reported by inserting a message into a div below the form. This uses an add-on validator called DateValidator.
  • eMail Address – This is a field that must be entered in the form user@domain.com and is validated when it loses focus… error will be reported via alert message. This uses the basic RegexFalidator.

 

First Name:   
Middle Name:   
Last Name:   
Date Of Birth:   
eMail Address:   
          

 

Other Form Validation Example.

Link: feedback.html

CODE for form (feedback.html):
<HTML>
<HEAD>
<TITLE>Vinyl Dealers: feedback</TITLE>
</HEAD>
<BODY>
<H2>Feedback</H2>
<BR>
<FORM Action=send_feedback.php Method=POST>
Your name: <INPUT Type=TEXT Name=user Size=40 Maxlength=40><BR>
Your email: <INPUT Type=TEXT Name=email Size=40 Maxlength=40><BR>
<BR>
Can we keep you updated with news about our site? <INPUT Type=RADIO Name=spam Value=1 Checked>Yes <INPUT Type=RADIO Name=spam Value=0>No<BR>
<BR>
Comments:<BR>
<TEXTAREA Name=comments Rows=10 Cols=60></TEXTAREA><BR>
<INPUT Type=SUBMIT Value=submit>
</FORM>
</BODY>
</HTML>
CODE for validation page (send_feedback.php)
<HTML>
<HEAD>
<TITLE>We appreciate your feedback</TITLE>
</HEAD>
<BODY>
<?
// check to make sure none of the variables are empty
if (!$user || !$email || !$comments) {
?>
<H2>Whoops</H2>
<BR>
Please fill in all fields.
<BR>
<A href=”feedback.html” mce_href=”feedback.html”>Click here to go back to the feedback page.</A>
<?
exit;
}
// check for a valid email address format
if (!eregi(“^[a-z0-9_]+@[a-z0-9-]+.[a-z0-9-.]+$”, $email)) {
?>
<H2>Whoops</H2>
<BR>
Please enter a valid address.
<BR>
<A href=”feedback.html” mce_href=”feedback.html”>Click here to go back to the feedback page.</A>
<?
exit;
}
// escape any characters that could cause problems
$user = addslashes($user);
$email = addslashes($email);
$comments = addslashes($comments);
// connect to the database and select ‘vinyldealers’
$db = mysql_connect(“localhost”);
mysql_select_db(“vinyldealers”, $db);
// add the user input to the ‘feedback’ table as a new record
$addfeedback = “INSERT INTO feedback (user, email, spam, comments)
VALUES (‘”.$user.”‘, ‘”.$email.”‘, ‘”.$spam.”‘, ‘”.$comments.”‘)”;
$result = mysql_query($addfeedback);
?>
<H2>Thank you</H2>
<BR>
We have added your comments to our database.
</BODY>
</HTML>

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