Quick Question... Confused JS->PHP

[tourtech]

I have a very quick question but I am having a heck of a time getting the answer...

I have a JavaScript which is called from my PHP code. IN this script I need to set a form variable on the page to a new value. I can do this with no problem. However, the form variable is different based on what the user did.

For example form objects are named xxx_1 and xxx_2, I want to pass xxx_1 or xxx_2 from PHP to JS and then have the JS set xxx_1 or xxx_2 to a new value. It seems that I can only get this to work if I explicitly call document.forms[0].xxx_1.value = x. I need this to be dynamic...

Any help???

[kingbear]

put PHP in your javascript ... for example:

<script>

var objectName = <?php echo($dynamicVariable);?>;

var h = eval(document.forms[0].objectName);

h.value = x;

</script>

[tourtech]

Originally posted by kingbear
put PHP in your javascript ... for example:

<script>

var objectName = <?php echo($dynamicVariable);?>;

var h = eval(document.forms[0].objectName);

h.value = x;

</script>

Still having problems...

My code looks like:

<script language="javascript"><!--
function JumpTo(theMenu, indexIDval){
// _var theDestination = theMenu.options[theMenu.selectedIndex].value;
alert(theMenu.options[theMenu.selectedIndex].value);
alert(indexIDval);
// var theindexID = indexID;
var obj = <?php echo (indexIDval); ?>;
alert(obj);
var obj2 = eval(obj);
obj2 = theMenu.options[theMenu.selectedIndex].value;
alert(indexIDval);
alert(obj2);
alert(document.forms.cart_quantity.optionSelectedArray_2.value);
}
//--></script>

indexIDVal is passed in as 'document.forms.cart_quantity.optionSelectedArray_2.value'

Things get set but if you do the final alert the actual object is still the old value...