grab id from select field

[JackRabbitSlims]

hey people,

I want to pass the value of a select option in the url when the user selects an option from a select field without a submit button to help populate another select field automatically.

The below code worked until I added another form to the same page above it. I've made sure all form names are different so it must be the Javascript.

Does anyone have a suggestion as to how I could change the javascript to make my page work.

<select name="deptid" id="deptid" class="filter_dropdown" onchange="filter('deptid');">

<script type="text/javascript">
function filter(which)
{
 
 //alert(which);
 
 document.forms[0].action="stats.php?deptid="+which;
 document.forms[0].submit();
}
 
</script>	

[giliav]

Try an eval :

Replace :
document.forms[0].action="stats.php?deptid="+which;
With :
eval("document.forms[0].action=\"stats.php?deptid=" + which + "\"");

I might have missed a quote there so you'll need to check.
The Eval allows parsing the parameter into the line.

[JackRabbitSlims]

thanks for the suggestion but i get the same result in the url:

../stats.php?deptid=deptid

is there anyone who maybe able to help with this???

[siteguru]

<select name="deptid" id="deptid" class="filter_dropdown" onchange="filter(this);">

???

[JackRabbitSlims]

I've fixed it:

The javascript was looking for the first form on the page (forms[0])

document.forms[0].action="stats.php?deptid="+which;
document.forms[0].submit();

so i changed it to the name of the form in which the select field was placed:

forms['dept']

thanks for your replies

[siteguru]

In other words, what you were really wanting was ...

<script type="text/javascript">
function filter(which)
{
 
 //alert(which);
 
 document.forms[which].action="stats.php?deptid="+which;
 document.forms[which].submit();
}
 
</script>

???

[JackRabbitSlims]

yeah sorry for being dumb