Someone please help this poor newbie.
I’m trying to build off of the css-tricks Editable Invoice to make a printable invoice that can be filled out on the screen. Instead of the default "Paid" textarea being subtracted from the total, I want to make it a "Shipping (cost)" area and ADD it to the total.
However, when I go into the example.js and change the "-" to a "+" it is (obviously) converting both values to string values and just tacking them on to each other.
How do I have the "Paid" textarea ADDED to the order total?
See my example I’m working on: http://youthskin.net/editableinvoice/
Thanks for any guidance — I’m assuming this should be cake for anyone familiar with Javascript (which I am obviously not!).