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Function calling error

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sipps

sipps

Technical User
Feb 9, 2003
133
GB
Hi all,

I have a little function just to check that some boxes of my form have been filled in, and if they have, then submit the form. I keep getting this error though and I can't find out what is wrong with this script, it's probably something simple and I cant see it!

Here is the code:

<script language=&quot;JavaScript&quot; type=&quot;text/JavaScript&quot;>
function subForm(){
message = &quot;&quot;
if (document.existingcustomer.Username.value == &quot;&quot;){
message += &quot;\n- Username is blank&quot;
}
if (document.existingcustomer.Credit_Card_Number.value == &quot;&quot;){
message += &quot;\n- Credit Card Number is blank&quot;
}
if (document.existingcustomer.Expiry_Date.value == &quot;&quot;){
message += &quot;\n- Expiry Date is blank&quot;
}
if (document.existingcustomer.Customer_Password.value == &quot;&quot;){
message += &quot;\n- Password is blank&quot;
}
if (message != &quot;&quot;){
alert (&quot;Please correct the following:&quot; + message)
}
else{
document.existingcustomer.action = &quot;bookingconfirmed.php&quot;
document.existingcustomer.method = &quot;post&quot;
document.existingcustomer.submit()
}
}


</script>

And this is the link that calls the function:

<a href=&quot;JavaScript:document.existingcustomer.subForm()&quot;>confirm my booking</a>

Any ideas? Thanks.
 
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what if you call the function like this?
<a href=&quot;JavaScript:subForm()&quot;>confirm my booking</a>

 
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Sorry, the error message that it returns is:

Object doesn't support this property or method

Thanks
 
Upvote 0 Downvote
I just changed the call, to below:

<a href=&quot;JavaScript:subForm()&quot;>confirm my booking</a>

and it appears to work:

<html>

<head>

<script language=&quot;JavaScript&quot; type=&quot;text/JavaScript&quot;>
function subForm(){
message = &quot;&quot;
if (document.existingcustomer.Username.value == &quot;&quot;){
message += &quot;\n- Username is blank&quot;
}
if (document.existingcustomer.Credit_Card_Number.value == &quot;&quot;){
message += &quot;\n- Credit Card Number is blank&quot;
}
if (document.existingcustomer.Expiry_Date.value == &quot;&quot;){
message += &quot;\n- Expiry Date is blank&quot;
}
if (document.existingcustomer.Customer_Password.value == &quot;&quot;){
message += &quot;\n- Password is blank&quot;
}
if (message != &quot;&quot;){
alert (&quot;Please correct the following:&quot; + message)
}
else{
document.existingcustomer.action = &quot;bookingconfirmed.php&quot;
document.existingcustomer.method = &quot;post&quot;
document.existingcustomer.submit()
}
}


</script>

</head>

<body>

<form name=&quot;existingcustomer&quot;>

<input type=&quot;text&quot; name=&quot;Username&quot;>
<br><input type=&quot;text&quot; name=&quot;Credit_Card_Number&quot;>
<br><input type=&quot;text&quot; name=&quot;Expiry_Date&quot;>
<br><input type=&quot;text&quot; name=&quot;Customer_Password&quot;>

And this is the link that calls the function:

<a href=&quot;JavaScript:subForm()&quot;>confirm my booking</a>

</form>
 
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