How To Update Textfield Values Based On Previous Entered Textfield Value

Hii All,

Plz Kindly help me.

I have one one form where i want to display values in textfields from database.

here is my form details:

MstPay(_form.php)

<table>

<tr>

<td>

<?php echo $form->labelEx($model,‘EmployeeId’); ?>

<?php echo $form->textField($model,‘EmployeeId’,array(‘size’=>20,‘maxlength’=>20)); ?>

<?php echo $form->error($model,‘EmployeeId’); ?>

</td>

<td>

<?php echo $form->labelEx($model,‘FixSalary’); ?>

<?php echo $form->textField($model,‘FixSalary’,array(‘size’=>20,‘maxlength’=>20)); ?>

<?php echo $form->error($model,‘FixSalary’); ?>

</td>

<td>

<?php echo $form->labelEx($model,‘Basic’); ?>

<?php echo $form->textField($model,‘Basic’,array(‘size’=>20,‘maxlength’=>20)); ?>

<?php echo $form->error($model,‘Basic’); ?>

</td>

</tr>

Here EmployeeId is a pk field.

I have Mstemployee table which has fields:

1. EmployeeId Pk field.

2. FixSalary.

3. Basic.

My question is when i will enter some value in EmployeeId textfield i want to display FixSalary & Basic values assign for that EmployeeId pk field from mstemployee table.

probalby has to be some kind of onChange/ajaxUpdate java script thing, but I don’t know how.