After clicking the return button, the window pops up to close

Question

I'm trying to implement a feature where if a popup opens and the user cancels it and then presses the return key, it should not open the popup again but should go back to the previous page!

<script>
        window.onload = function() {
          setTimeout(function() {
            window.open( "#popup_flight_travlDil3" ,"_self")

           }, 1000);
                }


              </script>

Answer 1

You can use sessionStorage

window.addEventListener("DOMContentLoaded", function() { // or $(function() { ... in jQuery
  const popped = sessionStorage.getItem("popped");
  if (popped) return; 
  setTimeout(function() {
    window.open("#popup_flight_travlDil3", "_self")
    sessionStorage.setItem("popped",true)
  }, 1000);
})