function sem(){ let sem = document.getElementById("sender_address").value; window.location.replace("https://localhost/af/index.php?page=student_filter&sem="+sem); } function sem1(){ let sem1 = document.getElementById("sender_address1").value; window.location.replace("https://localhost/af/index.php?page=student_filter&sem="+$sem+"&&sem1="+sem1); }