패라미터 값으로 주소 변경

      $.urlParam = function(name){
        var results = new RegExp('[\?&]' + name + '=([^&#]*)').exec(window.location.href);
        return results[1] || 0;
    }
 
    var sample_url01 = "https://www.sampleURL01.com";
    var sample_url02 = "https://www.sampleURL02.com"
 
    if    ($.urlParam('url_chk') == "url01") {
        $(".selector").attr("href", sample_url01)
    } else {
        $(".selector").attr("href", sample_url02)
    }