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validation fields

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sirron

sirron

Programmer
Mar 11, 2004
139
US

I have this code, and I want to validate this textfield and make sure the textfield is not empty or null and if is pop up a menu or message

is there a way to do this?
any help would be appreciated


<%@LANGUAGE="VBSCRIPT" CODEPAGE="1252"%>
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>

<body>
<form name="form1" method="post" action="">

<input type="text" name="textfield">
<input type="submit" name="Submit" value="Submit">

</form>
</body>
</html>
 
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This is something that would probably be best done using client-side script. You may need to tweak the syntax (javascript), but this should give you an idea of what you need:
Code: 
function Validate()
{
 if form1.textfield is null || form1.textfield = ""
 {
  alert("You cannot leave this field blank");
  form1.textfield.focus();
  return false;
 }
 else
  return true;
}

...HTML section
<input type="text" name="textfield">
<input type="submit" name="Submit" value="Submit" onclick="return Validate();">

------------------------------------------------------------------------------------------------------------------------
If you don't have a sense of humor, you probably don't have any sense at all.
- Anonymous
 
Upvote 0 Downvote
I tried this but its not poping up an alert. Im using dreamweaver to develope the page. When I run this on client side its not doing anything?

Can someone help?

<%@LANGUAGE="VBSCRIPT" CODEPAGE="1252"%>
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<script language="JavaScript">
<!--
function validation() {
if document.form1.textfield.value == "" {
alert ('textfield is blank');
return false;
}
else
return true;
//-->
</script>
</head>

<body>

<form action="" method="post" name="form1">
<input name="textfield" type="text" value="">
<input type="submit" name="Submit" value="Submit">

</form>

</body>
</html>
 
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<form action="" method="post" name="form1" [red]onSubmit="return validation();"[/red]>


Tony
________________________________________________________________________________
 
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It's still not working. I think I'm getting an error on the page but I'm not sure where.

Do you see any problem in the code?


<%@LANGUAGE="VBSCRIPT" CODEPAGE="1252"%>
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<script language="JavaScript">
<!--
function validation() {
if document.form1.textfield.value == "" {
alert ('textfield is blank');
return false;
}
else
return true;
//-->
</script>
</head>

<body>

<form action="" method="post" name="form1" onSubmit="return validation();">
<input name="textfield" type="text" value="">
<input type="submit" name="Submit" value="Submit">

</form>

</body>
</html>
 
Upvote 0 Downvote
Are you encountering a specific error message? That may help to troubleshoot the problem.

------------------------------------------------------------------------------------------------------------------------
If you don't have a sense of humor, you probably don't have any sense at all.
- Anonymous
 
Upvote 0 Downvote
Hello sirron,

Try change the name of the input type submit to be something else other than "submit"?

regards - tsuji
 
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When you run the page...see at the left bottom of the page...you will see a message "Done" with yellow triangle ...double click on that to see the exact error message...

-L
 
Upvote 0 Downvote
Ok here is the code u want...

<%@LANGUAGE="VBSCRIPT" CODEPAGE="1252"%>
<html>
<head>
</head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<script language="JavaScript">
<!--
function validation() {
if (document.form1.textfield.value == "")
{
alert ('textfield is blank');
return false;
}
else
return true;
}
//-->
</script>


<body>

<form action="" method="post" name="form1" onSubmit="return validation();">
<input name="textfield" type="text" value="">
<input type="submit" name="Submit" value="Submit">

</form>

</body>
</html>

Try that...

You had your code in the <Head> tags...

-L
 
Upvote 0 Downvote
The page comes up with an error on line 9

Error Expected '('
Code 0
 
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