我正在尝试在<footer>标记内的<blockquote>标记中添加一些文字，但这不起作用。我正在使用Bootstrap和jQuery。以下是我到目前为止所尝试的内容：
HTML：
<h5>
<div class="text-green"> Done by User / Ticket Status: Booked</div>
</h5>
<blockquote id="activity-detail">Details activities</blockquote>
的jQuery / JavaScript的：
<script>
.....
.....
// the note is a text value is fetched from json and console.log is logging it properly.
// Assume that note = 'This is the note text'.
if(note != ""){
$('#activity-detail').append("<footer>" + note +"</footer>");
}
......
......
</script>
预期结果
假设音符不是"" (blank)
<h5>
<div class="text-green"> Done by User / Ticket Status: Booked</div>
</h5>
<blockquote id="activity-detail">Details activities
<footer>This is the note text. </footer>
</blockquote>
我在这里缺少什么？