How to display modal pop up after external web page reply?


I have the form tag defined as:

 <form id=“register” class=“needs-validation” novalidate action=“Authorization.apx” method=“post” >

I would like to redirect the application to another Authorization.apx for backend processing after form validation is done.  

I used below a sample script from Bootstrap 4 for form submission. 

How can I modify below script to display a modal pop up section once the Authorization.aspx is complete successfully?  

// Example starter JavaScript for disabling form submissions if there are invalid fields
(function () {
‘use strict’;
window.addEventListener(‘load’, function () {
// Fetch all the forms we want to apply custom Bootstrap validation styles to
var forms = document.getElementsByClassName(‘needs-validation’);
// Loop over them and prevent submission
var validation =, function (form) {
form.addEventListener(‘submit’, function (event) {
if (form.checkValidity() === false) {
}, false);
}, false);


Hi @brianho888,

This post was moved to a different board that fits your topic of discussion a bit better. This means you’ll get better engagement on your post, and it keeps our Community organized so users can more easily find information.

As you’ll notice, your Topic is now in the Project Development Help and Advice board. No action is needed on your part; you can continue the conversation as normal here.

Let me know if you have any other questions or if I can help with anything else.