How can I pass the checked checkbox values to another page?

Question

Is there a way for this? What I want to happen is the hyperlinks from the left side will have sum totals, and so on and on the final page/tab, the summation of all the hyperlinks will be shown there. Here's a jsFiddle to better understand my point https://jsfiddle.net/nerdfighter/121myofn/1/

Here's the initial JavaScript code I wrote in adding the checked chekcboxes

<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
  <script type="text/javascript" src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>
  <script type="text/javascript">
    window.onload = function() {
  var inputs = document.getElementsByClassName('sum'),
    total = document.getElementById('payment-total');

  for (var i = 0; i < inputs.length; i++) {
    inputs[i].onchange = function() {
      var add = this.value * (this.checked ? 1 : -1);
      total.innerHTML = parseFloat(total.innerHTML) + add
      var new_total = parseFloat(document.getElementById('input').value);
      console.log(new_total);
      document.getElementById('input').value = new_total + add
    }
  }
}

  </script>

This is just a small project and I don't I won't be using server-side.

Answer 1

There's no id="payment-total" nor id="input" elements in your jsFiddle. So it won't work.

The algorithm is looking correct. But I recommend to pay more attention to strict code formatting - that helps to avoid mistakes.

I've added the following lines and jsFiddle began to work:

<span id="payment-total">0</span>
<input id="input" value="0">

---

Update by comments:

// TODO: Start using addEventListener() instead
window.onload = function() {
    var inputs = document.getElementsByClassName('sum'),
        total = document.getElementById('payment-total');

    for (var i = 0; i < inputs.length; i++) {
        inputs[i].onchange = function() {
            var add = this.value * (this.checked ? 1 : -1);

            // TODO: Consider state variables instead of parsing innerHTML
            // TODO: Never miss semicolons. It works, but causes hard debug sometimes
            total.innerHTML = parseFloat(total.innerHTML) + add  
            var new_total = parseFloat(document.getElementById('input').value);
            console.log(new_total);
            document.getElementById('input').value = new_total + add

            // Per tab total calculation
            var tabTotalEl = document.getElementById(this.dataset.tabTotalId);
            tabTotalEl.innerHTML = parseFloat(tabTotalEl.innerHTML) + add;
        }
    }
}

Add sum elements like this

<span id="tab-vegetables-total">0</span>

Add data-tab-id="tab-vegetables-total" attributes to the checkboxes.