title: Assign Resulted Value to Third TextBox Using jQuery
body: <p>i have three textboxes. I want to get the value from the first 2 textboxes, calculate the value and then assign the result to the 3rd textbox. To achieve this, i have done something like following in jquery;</p>
  
  <pre><code>&lt;script type="text/javascript"&gt;
     $(document).ready(function myfunction() {
          $("#TxBx_MarksObtained").change(function () {
              //var value = $(this).val();
              var a = $("#TextBoxTotalMarks").val();
              var b = $("#TxBx_MarksObtained").val();
              var c = (b * 100 / a).toFixed(2);
              $("#TextBoxMarksInPercent").val(c);
          }); 
      });
  &lt;/script&gt;
  </code></pre>
  
  <p>Now, the problem is, when i focus on <code>TextBoxTotalMarks</code> and enter the value, and for <code>TxBx_MarksObtained</code> too, Everythings works great and the result is assign to <code>TextBoxMarksInPercent</code>. <br />
  However, when i change my focus to another textbox (somewhere else in form) and then come back and change the value of <code>TextBoxTotalMarks</code> and <code>TxBx_MarksObtained</code>. I dont see any changes in <code>TextBoxMarksInPercent</code>. <br />
  <strong>What i am getting wrong? <br />
  Why my value isn't updated after comming back from another textbox?</strong></p>