title: jQuery, count the sum of text box values
body: <p>So here's the problem. I have two check boxes, and two text boxes, and one final text box at the bottom. What I'm trying to do is this: When check box 1 is checked, the text box right next to it gets a value of 8. When check box 2 is checked, the text box right next to it gets a value of 7. Then finally the final text box shows the sum of the text boxes, which in this case should be 15.</p>
  
  <p>I've tried this: just give the text boxes values with if statements. Then give a class "textboxes" for both text boxes, and just count the sum of them. I'm able to get the values with if statements, but can't get the final sum of those.</p>
  
  <pre><code>$(function(){
    $('#checkbox1').click(function(){
      if (this.checked) {
         $('#textbox1').val(7);
      }
    });
    $('#checkbox2').click(function(){
      if (this.checked) {
         $('#textbox2').val(8);
      }
    });
  
  var total = 0;
      $('.textboxes').each(function() {
         total += Number($(this).val());
      });
      $('#totalSum').val(total);
  
  });
  </code></pre>