I think the code below should do what you want:
################################################
Start of code
################################################
<script>
function checkUnique(frm,fieldname) {
// Initialize an array to hold the identically named
select boxes
var aFields = new Array();
var tmpArray = new Array();
// Strip the select boxes out of the form
for (var i=0;i<frm.elements.length;i++) {
if (frm.elements[i].name == fieldname) {
aFields[aFields.length] =
frm.elements[i].value;
}
}
// Check if we found the select boxes in the form
if (aFields.length) {
// Loop over the select box values
for (var i=0;i<aFields.length;i++) {
// Loop over the values found so var
// checking for duplicates
for (var j=0;j<tmpArray.length;j++) {
if(tmpArray[j] == aFields[i]) {
alert('Duplicate values
found in select boxes. The select boxes must have unique values');
return false;
}
}
tmpArray[tmpArray.length] = aFields[i];
}
}
else {
alert('Invlaid fieldname passed to checkUnique()
function');
return false;
}
return true;
}
</script>
<form action="#" method="post" onsubmit="return
checkUnique(this,'box1')">
<select name="box1">
<option value="1">Option 1
<option value="2">Option 2
<option value="3">Option 3
</select>
<select name="box1">
<option value="1">Option 1
<option value="2">Option 2
<option value="3">Option 3
</select>
<select name="box1">
<option value="1">Option 1
<option value="2">Option 2
<option value="3">Option 3
</select>
<input type="Submit" value="Test">
</form>
<cfdump var="#form#">
################################################
End of code
################################################
Spike
Stephen Milligan
Team Macromedia - ColdFusion
Co-author 'Reality Macromedia ColdFusion MX: Intranets and Content
Management'
http://spikefu.blogspot.com
> -----Original Message-----
> From: Alex Skinner [mailto:[EMAIL PROTECTED]]
> Sent: 18 December 2002 16:08
> To: [EMAIL PROTECTED]
> Subject: RE: [ cf-dev ] OT : Javascript Question
>
>
> The problem is all the selectboxes are called the same name
> hence the need for a list function
>
> 1,2,3
>
> 1,2,2 <--Error
>
> Alex
>
> -----Original Message-----
> From: Matt Horn [mailto:[EMAIL PROTECTED]]
> Sent: 19 December 2002 14:51
> To: [EMAIL PROTECTED]
> Subject: Re: [ cf-dev ] OT : Javascript Question
>
>
> Something like
>
> if((selectbox.value ==selectbox2.value) || (selectbox2.value
> ==selectbox3.value) || (selectbox.value ==selectbox3.value)) {
>
> alert("please select unique values for each box");
> }
> else {
> formname.submit();
> }
>
>
> I havnt tested this but it should work in IE at least
>
>
>
> At 14:20 18/12/2002 +0000, you wrote:
> >Hi,
> >
> >Having one of those mind blank days
> >
> >I have 3 select boxes within a form all with the same name
> >
> >
> >What I want to do is check to make sure that the user cant
> select the
> >same option more than once
> >
> >e.g.
> >
> >1,2,1
> >
> >1,1,3
> >
> >So that the form will only submit if the list is unique
> >
> >Anybody got any ideas (are there any list functions) or any code
> >snippets
> >
> >got as far as
> >
> >if (document.NewConf.Category_ID.value.length){
> >
> >}
> >
> >but now want to check each element of the list
> >
> >Any ideas
> >
> >Alex
> >
> >
> >
> >--
> >** Archive:
> http://www.mail-archive.com/dev%> 40lists.cfdeveloper.co.uk/
> >
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