基于JavaScript实现评论框展开和隐藏功能

<div
class="nr-comment">
<div
class="nr-comment-con">
<div
class="nr-comment-nav">
<div
class="comment-number">
<span>493</span>
<span>条评论</span>
</div>
<div
class="comment-sort">
切换为时间排序
</div>
</div>
<div
class="comment-content">
<div
class="com-users">
<div
class="comment-user">
<span>知乎用户</span>
<div
class="comment-user-content">
这个爬虫真的好强大！
</div>
</div>
<div
class="comment-time">
<div>2017.10.01 21:32:30</div>
<button
class="btn btn-primary btn-sm btn-reply">回复</button>
</div>
</div>
<div
class="user-reply">
<duv
class="reply-in">
<input
type="text"
value=""
name=""
placeholder="请输入评论内容" />
</duv>
<div
class="reply-buttons">
<button
type="button"
class="btn btn-primary btn-comment btn-sm">评论</button>
<button
type="button"
class="btn btn-default btn-cancel btn-sm">取消</button>
</div>
</div>
</div>
<div
class="comment-content">
<div
class="com-users">
<div
class="comment-user">
<span>知乎用户</span>
<div
class="comment-user-content">
这个爬虫真的好强大！
</div>
</div>
<div
class="comment-time">
<div>2017.10.01 21:32:30</div>
<button
class="btn btn-primary btn-sm btn-reply">回复</button>
</div>
</div>
<div
class="user-reply">
<duv
class="reply-in">
<input
type="text"
value=""
name=""
placeholder="请输入评论内容" />
</duv>
<div
class="reply-buttons">
<button
type="button"
class="btn btn-primary btn-comment btn-sm">评论</button>
<button
type="button"
class="btn btn-default btn-cancel btn-sm">取消</button>
</div>
</div>
</div>
<div
class="comment-content">
<div
class="com-users">
<div
class="comment-user">
<span>知乎用户</span>
<div
class="comment-user-content">
这个爬虫真的好强大！
</div>
</div>
<div
class="comment-time">
<div>2017.10.01 21:32:30</div>
<button
class="btn btn-primary btn-sm btn-reply">回复</button>
</div>
</div>
<div
class="user-reply">
<duv
class="reply-in">
<input
type="text"
value=""
name=""
placeholder="请输入评论内容" />
</duv>
<div
class="reply-buttons">
<button
type="button"
class="btn btn-primary btn-comment btn-sm">评论</button>
<button
type="button"
class="btn btn-default btn-cancel btn-sm">取消</button>
</div>
</div>
</div>
<div
class="comment-content">
<div
class="com-users">
<div
class="comment-user">
<span>知乎用户</span>
<div
class="comment-user-content">
这个爬虫真的好强大！
</div>
</div>
<div
class="comment-time">
<div>2017.10.01 21:32:30</div>
<button
class="btn btn-primary btn-sm btn-reply">回复</button>
</div>
</div>
<div
class="user-reply">
<duv
class="reply-in">
<input
type="text"
value=""
name=""
placeholder="请输入评论内容" />
</duv>
<div
class="reply-buttons">
<button
type="button"
class="btn btn-primary btn-sm btn-comment">评论</button>
<button
type="button"
class="btn btn-default btn-sm btn-cancel">取消</button>
</div>
</div>
</div>
<div
class="comment-ipt">
<input
type="text"
placeholder="输入你的评论">
<button
type="submit"
class="btn btn-sm btn-primary">评论</button>
</div>
</div>
</div>

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$(document).ready(function()
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$('.btn-reply').click(function()
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var n
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console.log('回复按钮集合'
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$(".user-reply").eq(index).css("display",
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$('.btn-cancel').click(function()
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var m
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$(".user-reply").eq(index).css("display",
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