Auto-close Bootstrap accordion panel when switch to mobile screen size

Question

Using Bootstrap 2.3.2 I have an accordion with a single panel that is open when the page is loaded.

Answer 1

Bootstrap 4 accordion:

$(window).bind('resize load', function() {
    if ($(this).width() < 767) {
        $('.collapse').addClass('show');
    } else {
        $('.collapse').removeClass('show');
    }
});