jQuery set dynamic image height

jQuery(document).ready(function( $ ){
  var heightc = $(".top-ads-banner img").height();
    $(".top-ads-banner").height(heightc);
});

.top-ads-banner {
	position: sticky;
	top: 0;
	-webkit-transition: all 1.5s;
    -moz-transition: all 1.5s;
    -ms-transition: all 1.5s;
    -o-transition: all 1.5s;
    transition: all 1.5s;
	width: 100%;
	margin: 0 auto;
	background: #000;
	height: 0px;
}