You might need to submit the code for me to be able to help more
effectively,
but it seems that you're javascript may not be doing all of it's job.
If I were trying to achieve the same thing I'd do something like the
following. It should only ever get around to submitting if the
checkSubmit() function returns true.
<html>
<head>
<script language="javascript">
//function to confirm that username and password fields have been
populated.
//It could use further validation to check length, type of content
etc etc
function checkSubmit(){
if(document.blahForm.username.value == "" ||
document.blahForm.password.value==""){
alert("must fill in the username and password fields
before submitting");
return false;
}else{
return true;
}
}
</script>
</head>
<body>
<form name="blahForm" action="blah.jsp" method="POST" onsubmit="return
checkSubmit()">
<input type="text" name="username" value="">
<input type="password" name="password" value="">
<input type="submit" name="submit" value="submit form">
</form>
</body>
</html>
> -----Original Message-----
> From: Rajkumar, Haripriya (Haripriya) [SMTP:[EMAIL PROTECTED]]
> Sent: Thursday,27 June 2002 2:36
> To: [EMAIL PROTECTED]
> Subject: HTML Form submit action and JSP interaction...
>
> Hi,
>
> I am writing a simple login validation pgm. I have a HTML file which has
> the
>
> login form and it action points to a JSP page that needs to be displayed
> ONLY AFTER the
> user has been successfully validated.
>
> Also, I have a JavaScript file that holds function to check for empty
> fields
> in the form and
> sends an alert.
>
> Basically
>
> 1. If empty fields are present the JavaScript, alert needs to be called
> and
> the HTML form page
> should still be visible.
>
> 2. If userId and password are entered but are not valid, then the JSP page
> that prints out the
> error message has to be displayed.
>
>
> Here is what happens. When the HTML form is called in the browser, and
> userid or password is not entered
> then the alert is displayed properly. After entering the userid and
> password, it goes to the JSP
> page properly.
>
> BUT when, I use the browser's BACK button, and go to the HTML form page,
> and
> if the password field is not
> present and try to hit submit button, The Alert message is displayed AS
> WELL
> AS the JSP page too, seems
> like the SUBMIT action is getting called. How do I fix this, so that even
> if
> teh user, hits the
> BACK button and tries to login giving empty fields, ONLY the alert has to
> be
> displayed.
>
> Any pointers???
> Thanks
> PHR
>
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