get params from url jquery

<script>
jQuery(document).ready(function($){
    $.urlParam = function(name){
    var results = new RegExp('[\?&]' + name + '=([^&#]*)').exec(window.location.href);
    if (results==null) {
       return null;
    }
    return decodeURI(results[1]) || 0;
}
   
   
    var land = $.urlParam('land');
    alert(land);
});
</script>