JAVASCRIPT

open bootstrap modal with javascript

$("#myModal").modal()

bootstrap modal show event

$('#code').on('shown.bs.modal', function (e) {
  // do something...
})

open modal event bootstrap

//This event fires immediately when the show instance method is called. 
$('#myModal').on('show.bs.modal', function (e) {
  // do something...
});

//This event is fired when the modal has been made visible to the user
$('#myModal').on('shown.bs.modal', function (e) {
  // do something...
});

//This event is fired immediately when the hide instance method has been called.
$('#myModal').on('hide.bs.modal', function (e) {
  // do something...
});

//This event is fired when the modal has finished being hidden
$('#myModal').on('hidden.bs.modal', function (e) {
  // do something...
})

bootstrap pop modal from another modal

// Hide current modal before opening new one
$("#idModal").modal('hide');
$("#idModal2").modal() // or .modal("show");

// show 1st modal again after closing 2nd modal
$("#idModal2").on('hidden.bs.modal', () => $("#idModal").modal('show'))
// using hide.bs.modal might cause modal to stop scrolling!!!

open bootstrap modal using vanilla js

let el = document.getElementById("modal1");
new Modal(el).show();