replace.html

// 压缩后：
<div id="article-content"><div><br></div><div>在这里写文章<div contenteditable="false" class="comment-tpl-wrap tpl-wrap" id="comment-tpl-2" data-id="3369401"><div class="comment-tpl"><div class="box-action"><span class="edit"><i class="icon pencil"></i> 修改</span><span class="remove"><i class="icon remove"></i> 删除</span></div><form class="comment-id-input ui form" style="display: none;"><div class="ui input action"><input type="text" placeholder="请输入目标评论的ID"><button type="submit" class="ui button icon"><i class="icon add sign"></i></button></div></form><div class="card comment-box-wrap" style="display: block;"><div class="comment-box"><a class="author-avatar" href="http://baidu.com" target="_blank">    <img alt="jyTI" src="http://www.regexbuddy.com/img/icon.png"></a><div class="box-info"><span class="author-name"><a href="http://baidu.com" target="_blank">jyTI</a></span><p contenteditable="true" class="comment-content">这是一段内容</p></div></div></div></div></div></div></div>


// 原始html:
<div id="article-content">
    <div>
    	<br>
    </div>
    <div>
    	在这里写文章
    	<div contenteditable="false" class="comment-tpl-wrap tpl-wrap" id="comment-tpl-2" data-id="3369401">
    		<div class="comment-tpl">
    			<div class="box-action">
    				<span class="edit"><i class="icon pencil"></i> 修改</span><span class="remove"><i class="icon remove"></i> 删除</span>
    			</div>
    			<form class="comment-id-input ui form" style="display: none;">
    				<div class="ui input action">
    					<input type="text" placeholder="请输入目标评论的ID"><button type="submit" class="ui button icon"><i class="icon add sign"></i></button>
    				</div>
    			</form>
    			<div class="card comment-box-wrap" style="display: block;">
    				<div class="comment-box">
    					<a class="author-avatar" href="http://baidu.com" target="_blank"><img alt="jyTI" src="http://www.regexbuddy.com/img/icon.png"></a>
    					<div class="box-info">
    						<span class="author-name"><a href="http://baidu.com" target="_blank">jyTI</a></span>
    						<p contenteditable="true" class="comment-content">
    							这是一段内容
    						</p>
    					</div>
    				</div>
    			</div>
    		</div>
    	</div>
    </div>
</div>

<script>
    var content =  $('#article-content').html();
    // 如何快速从 content 中把 .comment-tpl 都删除掉？即仅保留一个空的 .comment-tpl-wrap
</script>