Forms in Javascript 4.7

[tempoman]

I am trying to add the total for some drop down list but am having trouble referencing the value, I just keep on getting a value. The code however works perfectly in IE and Netscape 6.

Here is my code:

<javascript>
function PriceUpdate(whichbox) {

with (whichbox.form) {

alert(whichbox.value);//this gives me null all the time
if (whichbox.selected == false)
hiddentotal.value = eval(hiddentotal.value) - eval(whichbox.value);
else
hiddentotal.value = eval(hiddentotal.value) + eval(whichbox.value);
return(formatCurrency(hiddentotal.value));
}
}
</javascript>

<select name=&quot;Acc&quot; size=&quot;1&quot; onChange=&quot;this.form.total.value=PriceUpdate(this);&quot;>
<option VALUE=&quot;&quot;>Not Required</option>
<option value=&quot;135.00&quot;>Protein Structure Analysis </option>
<option value=&quot;320.00&quot;>FULL Registration</option>
</script>

Come someone please help me.

Thanx

Richard

 

[Glowball]

I can't tell for sure, but you are sending this.form.total.value to the function and your SELECT is named &quot;Acc&quot; -- so maybe you should call

onChange=&quot;PriceUpdate(this);&quot;

and that's it. If you can't ever get whichbox.value to popup a value then you must not be passing the right thing.

You also have some interesting tags... how about this instead:

<script language=&quot;JavaScript&quot;>
function PriceUpdate(whichbox) {
alert(whichbox.value); // for testing
var hiddentotal = 50;
var newHiddenTotal = 0;
if (whichbox.value == &quot;&quot
newHiddenTotal = eval(hiddentotal);
else
newHiddenTotal = eval(hiddentotal) + eval(whichbox.value);
alert(newHiddenTotal);
}

</script>

<select name=&quot;Acc&quot; size=&quot;1&quot; onChange=&quot;return PriceUpdate(this);&quot;>
<option VALUE=&quot;&quot;>Not Required</option>
<option value=&quot;135&quot;>Protein Structure Analysis </option>
<option value=&quot;320&quot;>FULL Registration</option>
</select>