AdminLTE 计算 iframe 标签高度

<script type="text/javascript">
    function iframeHeight(id) {
        var windowWidth = $(window).innerWidth();
        var windowHeight = $(window).innerHeight();
        if (windowWidth >= 786) {
            $('#'+id).css('height',windowHeight-50-5-51);
        } else {
            $('#'+id).css('height',windowHeight-50-50-5-51);
        }
    }
    iframeHeight('menuFrame');
    $(window).resize(function() {
        iframeHeight('menuFrame');
    });
</script>