javascript add checkbox-checked values

Question

I have a checkbox section that users can select to add features. I need each input\'s value to add to a sum to be presented in the #payment-total and #payment-rebill section. Es

Answer 1

total1 = document.getElementById('payment-rebill');

Gets the id 'payment-billed' and assigns a copy of it to var total1. Then

total1.innerHTML = parseFloat(total1.innerHTML) + add

Only changes the innerHTML of the COPY that you made a second ago. Try jQuery:

total1 = parseFloat(total1.innerHTML) + add
$("#payment-rebill").innerHTML(total1);

This way you do the calculations on the copy, then replace the original innerHTML with the copy's innerHTML.

EDIT -- To make it more clear, your original code was only changing the local copy total1. There wasn't any code to update the original #payment-rebill element.