How do I access a Javascript variable that is not known until execution time?

[Don]

Hi,

I jave a form that creates checkboxes dependent on what is selected
from a drop-dwon list; this is done using PHP. I have a button that
allows a user to "SELECT ALL" which will calls a JavaScript function to
check or uncheck all available checkboxes. The thing is, the number
and names of the checkboxes are built at run time and named 'dopost'
plus number like so:

dopost1, dopost2, dopost3, etc...

At the moment, my JavaScript function looks like this:

function selectInvoices(num_bl) {
for (bl_counter=1; bl_counter<=num_bl; bl_counter++) {
var dpvar = 'document.list_invoices.dopost' + bl_counter +
'.checked';
if (dpvar) {
alert(dpvar + ' is Checked');
} else {
alert(dpvar + ' is NOT Checked');
}
}
}

So..., how do I get the variable 'dpar' to reference the form object???

Thanks,
Don

[Jonas Raoni]

Don wrote:

dopost1, dopost2, dopost3, etc...
That's a strange way of naming inputs, I know PHP doesn't know how to
handle fields with the same name, so use the other structure.

<input name="dopost[]" />
<input name="dopost[]" />
<input name="dopost[]" />

On the server it will become an array, which is easier to handle.
But it may be not a good idea too
<URL:http://jibbering.com/faq/#FAQ4_25> =]

At the moment, my JavaScript function looks like this:

var dpvar = 'document.list_invoices.dopost' + bl_counter + '.checked';

This is available on the group FAQ
<URL:http://jibbering.com/faq/#FAQ4_39>.
--
Jonas Raoni Soares Silva
http://www.jsfromhell.com