Bootstrap 3 Modal: how to check if modal is open or closed using jquery/javascript

Question

Can anyone please tell me how to check bootstrap 3.0 modal status, is it open or closed using jQuery or javascript. I used following code but it works when you have opened a mod

Answer 1

if the modal is opened in a form loaded by ajax you can use

$(document).on('hidden.bs.modal', '#photoModal', function () {
    cancel_camera();
    document.getElementById('PhotoPerson').innerHTML = '';
});*