JS Sticky Floating any section

/*js for floating any section*/
		$(function() {
		    var navbar = $('#ic-floating');
		    var offset = navbar.offset();

		    var objectHeight = navbar.outerHeight();
		    var windowHeight = $(window).height();

		    $(window).scroll(function () {
		        var scrollTop = $(window).scrollTop() + ( windowHeight - objectHeight ); // check the visible top of the browser

		        if (offset.top <= scrollTop) {
		            navbar.addClass('sticky');
		        } else {
		            navbar.removeClass('sticky');
		        }
		    });
		});

/*CSS*/
.ic-sticky {
    position: fixed;
    bottom: 0;
    width: 100%;
    background-color: #fff;
    z-index: 2;
}