基于JavaScript实现评论框展开和隐藏功能
(编辑：jimmy 日期: 2024/11/15 浏览：3 次 )
1.效果图如下所示，
点击评论会在对应的评论区域展开评论输入框，点击取消会取消对应的评论输入框
2.html代码：需要引入jQuery.js
<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>
3.css样式代码，样式无所谓，自己写就可以。
.nr-comment {
width:
100%;
border-right:
1px
solid #A9A9A9;
border-left:
1px
solid #A9A9A9;
}
.nr-comment .nr-comment-con {
width:
100%;
}
.nr-comment .nr-comment-con .nr-comment-nav {
width:
100%;
height:
40px;
border-bottom:
1px
solid #F5F5F6;
border-right:
1px
solid #A9A9A9;
border-left:
1px
solid #A9A9A9;
background-color:
#1E8CE0;
}
.nr-comment .nr-comment-con .nr-comment-nav .comment-number {
float:
left;
width:
85px;
height:
30px;
text-align:
center;
margin-top:
5px;
color:
white;
line-height:
2.3em;
}
.nr-comment .nr-comment-con .nr-comment-nav .comment-sort {
float:
right;
width:
110px;
height:
30px;
margin-top:
5px;
margin-right:
10px;
line-height:
2em;
color:
white;
}
.nr-comment .nr-comment-con .comment-content {
width:
100%;
margin-top:
10px;
border-bottom:
1px
solid #a9a9a9;
}
.nr-comment .nr-comment-con .comment-content .com-users {
width:
100%;
min-height:
60px;
}
.nr-comment .nr-comment-con .comment-content .com-users .comment-user {
float:
left;
width:
500px;
height:
60px;
}
.nr-comment .nr-comment-con .comment-content .com-users .comment-user span {
color:
black;
margin-left:
10px;
}
.nr-comment .nr-comment-con .comment-content .com-users .comment-user .comment-user-content {
width:
90%;
height:
60px;
margin-left:
10px;
}
.nr-comment .nr-comment-con .comment-content .com-users .comment-time {
float:
right;
width:
190px;
height:
60px;
text-align:
center;
color:
#9CADC6;
font-size:
0.9em;
text-align:
right;
}
.nr-comment .nr-comment-con .comment-content .com-users .comment-time div {
margin-right:
15px;
}
.nr-comment .nr-comment-con .comment-content .com-users .comment-time .btn-reply {
margin-top:
5px;
border-radius:
4px;
border:
none;
background-color:
#1BB394;
color:
white;
margin-right:
15px;
}
.nr-comment .nr-comment-con .comment-content .user-reply {
display:
none;
width:
100%;
height:
50px;
}
.nr-comment .nr-comment-con .comment-content .user-reply .reply-in {
float:
left;
width:
85%;
height:
50px;
}
.nr-comment .nr-comment-con .comment-content .user-reply .reply-in input {
width:
100%;
height:
30px;
margin-top:
10px;
margin-left:
10px;
}
.nr-comment .nr-comment-con .comment-content .user-reply .reply-buttons {
float:
right;
margin-top:
10px;
}
.nr-comment .nr-comment-con .comment-content .user-reply .reply-buttons .btn-comment {
float:
right;
margin-right:
14px;
background-color:
#1BB394;
border:
none;
color:
white;
}
.nr-comment .nr-comment-con .comment-content .user-reply .reply-buttons .btn-cancel {
float:
right;
margin-right:
10px;
}
.nr-comment .nr-comment-con .comment-ipt {
width:
100%;
height:
40px;
border-bottom:
1px
solid #A9A9A9;
margin-top:
10px;
}
.nr-comment .nr-comment-con .comment-ipt input {
display:
block;
width:
92%;
height:
30px;
float:
left;
font-size:
14px;
margin-left:
10px;
}
.nr-comment .nr-comment-con .comment-ipt button {
display:
block;
float:
right;
background-color:
#1BB394;
color:
white;
margin-right:
13px;
border:
none;
}
4.js控制对应评论按钮事件。
<script>
$(document).ready(function()
{
$('.btn-reply').click(function()
{
// console.log($(this).index());
// 获取回复按钮集合,getElementByClassName;
var m
= document.getElementsByClassName("btn-reply");
var n
= document.getElementsByClassName("user-reply");
console.log('回复按钮集合'
+ m);
// 获取回复按钮的索引
var index
= $(".btn-reply").index($(this));
console.log(index);
$(".user-reply").eq(index).css("display",
"block");
});
$('.btn-cancel').click(function()
{
var m
= document.getElementsByClassName("btn-reply");
var n
= document.getElementsByClassName("user-reply");
var index
= $(".btn-cancel").index($(this));
console.log(index);
$(".user-reply").eq(index).css("display",
"none");
});
});
</script>
总结
以上所述是小编给大家介绍的基于JavaScript实现评论框展开和隐藏功能，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对网站的支持！
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