JSFiddle - React, Tailwind, and code Playground

by azhari

HTML

<table border="0" cellpadding="5" align="center">
  <form action="" method="post">
     <tr>
        <td>Total Bayar :</td> 
        <td><input type="text" name="harga" id="harga" /></td>
     </tr> 
     <tr>
        <td>Diskon :</td> 
        <td><input type="text" name="diskon" id="diskon" /></td>
     </tr>
     <tr>
        <td>Yang Harus Dibayar :</td> 
        <td><input type="text" name="totBayar" id="totBayar" disabled /></td>
     </tr>
  </form>
</table>

JavaScript

$("#diskon").keyup(function(){
        var harga  = parseInt($("#harga").val());
        var diskon  = parseInt($("#diskon").val());
        var total = harga - (harga*(diskon/100));
        $("#totBayar").val(total);
      });