JS get param and print into form value

JS Param GET

$(document).ready(function (){

        $.urlParam = function(name){
            var results = new RegExp('[\\?&]' + name + '=([^&#]*)').exec(window.location.href);
            if (results==null){return null;}
            else{return results[1] || 0;}
                                    }
        console.log($.urlParam('seng'));

        $('#locationtoprint').attr('value', $.urlParam("param1"));

    });