0 Replies Latest reply: Aug 5, 2013 1:11 PM by AdamLeeBlythe RSS

    HELP with Dropdown item on mouse down to add 3.5% to sub total

    AdamLeeBlythe Community Member

      Hi,

       

      Please take a look at my form (it will be easier to understand my problem)

       

      When you select 'AMEX' in the dropdown menu 'cardtype', I would like a 3.5% processing fee to be added to the subtotal and shown in the 'processingfee' text field.

       

      I did find the following script that shows 3.5% of subtotal. I pasted it in the 'processingfee' text field.

       

       

      var f = this.getField("subtotal");
      event.value = Math.round(f.value * 3.5) / 100;
      

       

      but I need this to work ONLY when 'AMEX' is selected in the 'cardtype dropdown menu'. All other items in the dropdown menu should return 0.

       

      How can I achieve this?

       

      Thank you in advance!