[英]Insert Before Last Child jQuery
I have a page with posts, comments and replies. 我的页面上有帖子,评论和回复。 Posts can have many comments, and each comment can have many replies - similar to the way Facebook works. 帖子可以有很多评论,每个评论可以有很多回复-类似于Facebook的工作方式。
I am adding these dynamically via an ajax call to each post. 我通过ajax调用将这些动态添加到每个帖子。
At the end of each list of replies there is a reply form. 每个答复列表的末尾都有一个答复表单。 The problem I am having is when a new reply is added to a comment, I am unable to insert the reply before the reply form - which is the last child of the li. 我遇到的问题是,将新答复添加到评论时,我无法在答复表单之前插入答复-这是li的最后一个孩子。
Here is my js: 这是我的js:
var $div = $('.js-post-show');
function _addComment(comment) {
var tplText = $('#js-comment-template').html();
var tpl = _.template(tplText);
var html = tpl(comment);
$div.find('.js-comment-list')
.append($.parseHTML(html));
}
function _addReply(reply, commentId) {
var tplText = $('#js-reply-template').html();
var tpl = _.template(tplText);
var html = tpl(reply);
$div.find("li[data-comment-id='" + commentId + "']")
.append($.parseHTML(html));
}
function _loadReplyForm(comment) {
var tplText = $('#js-reply-form-template').html();
var tpl = _.template(tplText);
var html = tpl(comment);
$div.find("li[data-comment-id='" + comment.id + "']")
.append($.parseHTML(html));
}
And here is my HTML: 这是我的HTML:
<li class="list-group-item py-4 comment-list" data-comment-id="871">
<div class="media">
<div class="avatar avatar-sm">JD</div>
<div class="media-body">
<div class="mb-2">
<span class="h6 mb-0">John Doe</span>
</div>
<p>
Comment here...
</p>
<div class="d-flex align-items-center">
<div class="mr-2">
<button class="btn btn-sm btn-outline-primary" data-target="#create-reply-871" data-toggle="collapse" aria-expanded="true" aria-controls="create-reply-871">Reply</button>
<button class="btn btn-sm btn-outline-primary js-like-comment" data-url="/api/comments/871/toggle-comment-like" data-is-liked="1">
<span class="fas fa-thumbs-up"></span>
<span class="js-like-comment-count">1</span>
</button>
</div>
</div>
</div>
</div>
<div class="media">
<div class="avatar avatar-sm">JD</div>
<div class="media-body">
<div class="mb-2">
<span class="h6 mb-0">Jane Doe</span>
</div>
<p>
Reply here...
</p>
<div class="d-flex align-items-center">
<div class="mr-2">
<button class="btn btn-sm btn-outline-primary" data-target="#create-reply-24" data-toggle="collapse" aria-expanded="false" aria-controls="create-reply-24">Reply</button>
<button class="btn btn-sm btn-outline-primary js-like-reply" data-url="/api/replies/24/toggle-reply-like" data-is-liked="0">
<span class="far fa-thumbs-up"></span>
<span class="js-like-reply-count">0</span>
</button>
</div>
</div>
</div>
</div>
<div class="media">
<div class="avatar avatar-sm">RS</div>
<div class="media-body">
<div class="mb-2">
<span class="h6 mb-0">Rob Smith</span>
</div>
<p>
Another reply
</p>
<div class="d-flex align-items-center">
<div class="mr-2">
<button class="btn btn-sm btn-outline-primary" data-target="#create-reply-25" data-toggle="collapse" aria-expanded="false" aria-controls="create-reply-25">Reply</button>
<button class="btn btn-sm btn-outline-primary js-like-reply" data-url="/api/replies/25/toggle-reply-like" data-is-liked="0">
<span class="far fa-thumbs-up"></span>
<span class="js-like-reply-count">0</span>
</button>
</div>
</div>
</div>
</div>
<div class="media js-create-reply collapse show" id="create-reply-871" style="">
<div class="media-body">
<form method="post" class="card-body js-create-reply-form needs-validation" novalidate="novalidate" data-url="/api/replies/871">
<div class="form-group"><textarea id="reply" name="reply" required="required" class="from-control-lg js-create-reply-textarea form-control" rows="4" placeholder="Type your reply here"></textarea></div>
<div class="d-flex align-items-center">
<button type="submit" class="btn btn-success mr-3 js-create-reply-button">Submit your reply</button>
<a href="#create-reply" class="text-small text-muted" data-toggle="collapse" data-target="#create-reply-871" aria-expanded="true" aria-controls="create-reply-871">Cancel</a>
</div>
</form>
</div>
</div>
</li>
I have tried insertBefore() but without success, any advice would be greatly appreciated. 我尝试过insertBefore()但没有成功,任何建议将不胜感激。
您可以使用insertAfter()
jQuery函数: http : insertAfter()
也可以在选择器中使用:last
来指定最后一个答复,例如
$(replyHtml).insertAfter("#js-reply-template li:last");
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