Warning This library is no more maintained.
jQuery plugin for synchronising the values of two fields.
Download the production version or the development version.
In your web page:
<script src="jquery.js"></script>
<script src="dist/jquery-fieldsync.min.js"></script>
<script>
jQuery(function($) {
// sync the value of the phone input field to the fax input field
$('#input-address-fax').fieldsync($('#input-address-phone'));
});
</script>