multiple AJAX responses delay in JAVASCRIPT

<script src="js/[login to view URL]"></script> <script> function test() { var ajaxTime= new Date().getTime(); const xhttp = new XMLHttpRequest(); [login to view URL] = function() {[login to view URL](new Date().getTime()-ajaxTime);} [login to view URL]("GET", "[login to view URL](%E8%A1%A5%E7%89%99)&regMode=1&regType=1&unionId=29&corpId=265&doctCode=000542&doctName=%E9%AB%98%E6%97%AD&doctSchWeek=%E4%B8%80%2C%E4%B8%89%2C%E4%BA%94&subProfessDoctLabel=false&userPlan=1&target=_blank"); [login to view URL](); } intvaltag=[login to view URL](test,1000); </script>