javascript - How can i add permanent word to the text box? -

i trying add permanent word textbox.in text box take users firstname automatically when user enters name in firstname textbox using onkeyup="copytext()" function.what want want s add permanent word sitename textbox after getting automatically typed firstname.

here code

<td><input type="text" id="fname" name="fname"   value=""  placeholder="your first name" onkeyup="copytext()"  required /></td>  <td><input type="text" id="sitename" name="sitename" value=""  placeholder="your site name" readonly/></td> 

here javascript code working

<script type="text/javascript">     function copytext() {         src = document.getelementbyid("fname");         dest = document.getelementbyid("sitename");         dest.value = src.value;     } </script> 

this pretty doable jquery:

$('#fname').keyup(function(event) {      event.stoppropagation();      $('#sitename').val($('#fname').val()); }); 

you have remove copytext() function work.

hope helps.