pass value from javascript into cfc

Hi,

I want to pass the value from the input field intomycfcwithout click on the submit button.  I am thinking about using the javascript to pass this value into thecfc then fromcfc, do the query to return the data back tocfm page but not sure howto doit.

I have the form field name sale order.  I want to pass the document.getElementById('so').value from the javascript tomyCFC.  Then frommyCFC, i use this value to do the query and return the data back tocfm.  Would someone please show me?

Thanks