JQuery - OnKeyUp

HTML

http://api.jquery.com/keyup/

<br> <br />Type Here:<input type="text" id="textbox1"/>

<br><br>
Results
<br /><input type="text" id="textbox2"/>
<br /><input type="text" id="textbox3"/>

<br /><br /><br />
<div id="log"></div>

JavaScript

$("#textbox1").keyup(function(){
        
        var textinput = $('#textbox1').val().substring(0,8);
         
    $('#log').append('<br />Handler for .keyup() called - ' + textinput);
 
        
        $("#textbox2").val(textinput);
        $("#textbox3").val(textinput);
        
        
        
    });