我有 2 个 div，我需要使用 2 个导航选项卡在它们之间导航:第 1 年和第 2 年。当我单击第 1 年时，导航工作正常，出现“第一个”div，“第二个”div 也是如此。我的问题是，当页面首次加载时，两个 div 都不处于事件状态。我如何使“第一个”div 在首次加载页面时始终显示？看了很多帖子还是没法解决
即首次加载页面时，在我点击它们之前，这两个选项卡都不会显示
页面加载时应该是这样的:
当前代码:
section {
padding: 150px 0;
}
header {
padding: 156px 0 100px;
}
.it-icons a {
display: inline-block;
height: 3.5rem;
width: 3.5rem;
background-color: #4582EC;
color: #fff !important;
border-radius: 100%;
text-align: center;
font-size: 1.5rem;
line-height: 3.5rem;
margin-right: 1rem;
}
.it-icons a:hover {
transform: scale(1.3) rotate(20deg);
background-color: skyblue;
}
.tu-icon a:hover {
transform: rotate(5deg);
}
.os-icons a {
display: inline-block;
height: 3.5rem;
width: 3.5rem;
background-color: #4582EC;
color: #fff !important;
border-radius: 100%;
text-align: center;
font-size: 1.5rem;
line-height: 3.5rem;
margin-right: 1rem;
}
.os-icons a:hover {
transform: scale(1.3) rotate(20deg);
background-color: skyblue;
}
.tabs .nav-tabs > li, .tabs .nav-pills > li {
float: none;
display: inline-block;
margin-bottom: 10px;
padding: 5px 5px;
}
.tabs .nav-tabs {
text-align: center;
border-bottom: 0;
margin-bottom: 20px;
}
.tabs .nav-tabs li:not(:last-child) {
margin-right: 10px;
}
.tabs .nav-tabs li a {
text-transform: capitalize;
font-size: 20px;
padding: 10px 25px;
border: 2px solid #4582EC;
border-radius: 0;
transition: all .3s ease;
font-weight: 600;
color: #4582EC;
font-family: "Source Sans Pro", sans-serif;
}
.tabs .nav-tabs li a:hover {
background: #4582EC;
color: #fff;
border: 2px solid #4582EC;
}
.tabs .nav-tabs li.active a {
color: #fff;
background: #4582EC;
border: 2px solid #4582EC;
}
.service-box {
position: relative;
width: 100%;
}
.service-box .contents {
margin-left: 30px;
}
.tab-content {
position: relative;
float: left;
width: 100%;
z-index: 99;
}
.service-box {
position: relative;
width: 100%;
}
.service-box .section-title h3 {
position: relative;
font-size: 32px;
line-height: 42px;
font-weight: 700;
padding-bottom: 20px;
margin-bottom: 45px;
color: #000;
text-transform: uppercase;
}
.service-box .section-title h3:before {
position: absolute;
left: 0px;
content: '';
bottom: 0px;
background: #333333;
height: 1px;
width: 55px;
}<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js" integrity="sha384-wfSDF2E50Y2D1uUdj0O3uMBJnjuUD4Ih7YwaYd1iqfktj0Uod8GCExl3Og8ifwB6" crossorigin="anonymous"></script>
<section id="education" style="background-color:whitesmoke;">
<div class="container">
<div class="row d-flex no-gutters">
<div class="col-lg-12 mx-auto">
<h2 style="text-align: center;"> Education </h2>
<div class="row">
<br>
<br>
<div class="col-md-8">
<!--tabs-->
<div class="tabs">
<ul class="nav nav-tabs" role="tablist">
<li role="presentation" class="active">
<a href="#first" data-toggle="tab"> First Year </a>
</li>
<li role="presentation">
<a href="#second" data-toggle="tab"> Second Year </a>
</li>
</ul>
</div>
<!--Start single tab content-->
<div class="tab-content">
<div class="service-box tab-pane fade in active row" id="first">
<div class="contents">
<div class="section-title">
<br>
<h3> First Year</h3>
<br>
</div>
<div class="col-md-8 animate-box">
<div class="progress-wrap">
<h3>Photoshop</h3>
<div class="progress" style="width: 100%;">
<div class="progress-bar color-1" role="progressbar" aria-valuenow="90"
aria-valuemin="0" aria-valuemax="100" style="width:90%">
<span>90%</span>
</div>
</div>
</div>
<br>
<div class="progress-wrap ftco-animate">
<h3>jQuery</h3>
<div class="progress">
<div class="progress-bar color-2" role="progressbar" aria-valuenow="85" aria-valuemin="0"
aria-valuemax="100" style="width:85%">
<span>85%</span>
</div>
</div>
</div>
<br>
</div>
</div>
</div>
<!--End single tab content-->
<!--Start single tab content-->
<div class="service-box tab-pane fade in" id="second">
<div class="contents">
<div class="section-title">
<br>
<h3> Second Year</h3>
<br>
</div>
<div class="col-md-8 animate-box">
<div class="progress-wrap">
<h3>Java</h3>
<div class="progress" style="width: 100%;">
<div class="progress-bar color-1" role="progressbar" aria-valuenow="90"
aria-valuemin="0" aria-valuemax="100" style="width:90%">
<span>90%</span>
</div>
</div>
</div>
<br>
<div class="progress-wrap ftco-animate">
<h3>C#</h3>
<div class="progress">
<div class="progress-bar color-2" role="progressbar" aria-valuenow="85" aria-valuemin="0"
aria-valuemax="100" style="width:85%">
<span>85%</span>
</div>
</div>
</div>
<br>
</div>
</div>
</div>
<!--End single tab content-->
</div>
</div>
</div>
</div>
</div>
</div>
</section>最佳答案
关于javascript - 内容 div 之间的选项卡，第一个 div 在加载时未激活，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/59180106/