Jquery change event
<p>Can somebody help me to solve this problem?</p>

<p>I have form. The form contains these fields.</p>

<ul>
<li>Principal - textfield1</li>
<li>Interest - textfield2</li>
<li>Service Charge - textfield3</li>
<li>and Total. - textfield4</li>
</ul>

<p>Scenario is this:</p>

<p>I will input an amount of (2000.00) in Principal(textfield1), automatically the Total(textfield4) will change from 0.00 to 2000.00, and when I input 12 in Interest(textfield2) the total will update again to 2240.00 same with service charge. if i input 100 in service charge(textfield3) it will total to 2340.00.</p>
