Divide data for form?

[robhalv1]

I am currently pulling a 10 digit number form a database and propulating a form.

I have recently changed the form to 3 input boxes and can't figure out how to split the data (i.e. xxx, xxx, xxxx).

Here is snippet from my current code:

function loadModalPromo()
{
    modalpromo = new Boxy("<?php loadPromoModalContent(); ?>", {title: "I do not have a Promo Code", modal: false, closeable: true, show: false });
 
    $("#mphavecontact").click(function() {
        modalpromo.hide();
    });
 
    $("#mpnotcontact").click(function() {
        $("#mpoptionform").hide();
        $("#mpgettingpromo").show();
        $.ajax({
           type: "POST",
           url: "yhfiles/ajaxgetpromo.php",
           data: "key=" + "<?php echo $_SESSION["ajaxget_promo_key"]; ?>",
           success: function(msg){
             if(msg.length == 10)
             {
                $("#logpromo").val(msg);
             }
             else
             {
                 alert("Error in retrieving the promo code. Please contact the administrator.");
             }
           },
           complete: function(msg){
               $("#mpoptionform").show();
               $("#mpgettingpromo").hide();
               modalpromo.hide();
           }
         });
 
 
    });
}

Any help would be appreciated.

[johny10151981]

if you do it with php

$value="1234567890";
$part1=substr($value,0,3);
$part2=substr($value,3,3);
$part2=substr($value,6,4);
 

want to do with javascript

var value="1234567890";
var part1=value.substr(0,3);
var part2=value.substr(3,3);
var part3=value.substr(6,4);