Changing the value of texfiled using onChange?

[Young-Soo Roh]

Hi.
I need to get simple script working.
I have many select object.
When I select a different option, I would like to change the value of
corresponding text input field.
How can I do this using javascript?

Here is what I have so far.

<SELECT NAME=\"%s\" onChange=\"fill _desc(this.form , $name, $field_name)>

<script language="javas cript">
<!-- Hide me please!
function fill_desc(form, name, field_name) {
var myindex=form.na me.selectedInde x
if(form.name.op tions[myindex].value != "0") {
form.field_name .value = form.name.optio ns[myindex].value;
}
}
//-->

Thanks for your help.

[Lee]

Re: Changing the value of texfiled using onChange?

Young-Soo Roh said:[color=blue]
>
>Hi.
>I need to get simple script working.
>I have many select object.
>When I select a different option, I would like to change the value of
>correspondin g text input field.
>How can I do this using javascript?
>
>Here is what I have so far.
>
><SELECT NAME=\"%s\" onChange=\"fill _desc(this.form , $name, $field_name)>[/color]

You seem to be missing a closing \" in that line, but it looks like
you've only shown part of it, so that's probably not really a problem.
[color=blue]
><script language="javas cript">
><!-- Hide me please!
>function fill_desc(form, name, field_name) {
> var myindex=form.na me.selectedInde x
> if(form.name.op tions[myindex].value != "0") {
> form.field_name .value = form.name.optio ns[myindex].value;
> }
>}
>//-->[/color]

You don't need to hide code from any browser you're going to run into.
The part of a reference that follows a "." cannot be a variable.
If name is a variable, you can't refer to it as "form.name" .
You refer to it as form.elements[name], or you simply pass a reference
to the Select object itself, and use its form attribute to refer to
the form that contains it:

<SELECT NAME=\"%s\" onChange=\"fill _desc(this,$fie ld_name)>

<script type="text/javascript">
function fill_desc(selec t_reference,fie ld_name){
if(select_refer ence.selectedIn dex){ // true if not 0
select_referenc e.form.elements[field_name].value=
select_referenc e.options[select_referenc e.selectedIndex].value;
}
}
</script>