function getGet(name) { var s = window.location.search; s = s.match(new RegExp(name + '=([^&=]+)')); return s ? decodeURI(s[1]) : false; } $(function(){ $("#field-input-1304696").val(getGet("utm_source")); $("#field-input-1304697").val(getGet("utm_medium")); $("#field-input-1304698").val(getGet("utm_campaign")); });