问使用jQuery从内部div中删除

EN

<script language="javascript">
    $(document).ready(function () {
        $(".content").hide();
        $(".heading").click(function () {
            var id = $(this).attr("id");
            var content = $(this).next(".content");

            if (content.is(":hidden")) {
                content.append("<p id='render-object'>Testing rendering on click</p>");
                alert('Content is opening');
            }
            else if (content.is(":visible")) {
                content.next("#render-object").remove();
                alert('Content is closing');
            }

            content.slideToggle(100);                
        });
    });
</script>