Resposive

if (window.matchMedia('(max-width: 1200px)').matches) {
    // functionality for screens smaller than 1200px
}

To make this responsive, you just need to wrap it in a resize function:

$(window).resize(function() {
    if (window.matchMedia('(max-width: 1200px)').matches) {
        // functionality for screens smaller than 1200px
    }
});