用jQuery动态设置活动标签

Question

我正在尝试将标签动态设置为活动。 我已经在网上搜索了，但解决方案不起作用，这是我的代码。

<ul id="memnav" class="nav nav-tabs">
    <li class="active">
    <a class="dropdown-toggle" data-toggle="tab" href="#publication-tab">
        Publications
    </a>
    </li>
    <li><a data-toggle="tab" href="#project-tab">Projects</a></li>
    <li class="dropdown">
    <a class="dropdown-toggle" data-toggle="dropdown" href="#">
        About me
        <b class="caret"></b>
    </a>
    <ul class="dropdown-menu">
        <li><a data-toggle="tab" href="#education-tab">Education</a></li>
        <li><a data-toggle="tab" href="#career-tab">Career</a></li>
        <li><a data-toggle="tab" href="#contact-tab">Contact</a></li>
    </ul>
    </li>
</ul>

并在脚本中

var active_tab = sessionStorage.getItem('active_tab');
        if(active_tab){
            $("#memnav").tabs().tabs( "option", "active", active_tab);
        }

但是它抛出了这个错误

未捕获的错误：jQuery UI选项卡：片段标识符不匹配。

我也将“ ul”放在“ div”中，但显示相同的错误

Answer 1

只需使用addClass
添加.eq() ： https : .eq()

 $(document).ready(function(){ var i=0;//get from storrage $("#memnav li").eq(i).addClass('active'); }); 

  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script> <ul id="memnav" class="nav nav-tabs"> <li> <a class="dropdown-toggle" data-toggle="tab" href="#publication-tab"> Publications </a> </li> <li><a data-toggle="tab" href="#project-tab">Projects</a></li> <li class="dropdown"> <a class="dropdown-toggle" data-toggle="dropdown" href="#"> About me <b class="caret"></b> </a> <ul class="dropdown-menu"> <li><a data-toggle="tab" href="#education-tab">Education</a></li> <li><a data-toggle="tab" href="#career-tab">Career</a></li> <li><a data-toggle="tab" href="#contact-tab">Contact</a></li> </ul> </li> </ul> 

Answer 2

您也可以尝试：)

 $(document).ready(function(){ var active_tab = '#publication-tab'; $('#memnav').find('a[href="'+active_tab+'"]').parent().addClass('active'); }); 

 <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"> <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script> <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script> <ul id="memnav" class="nav nav-tabs"> <li> <a class="dropdown-toggle" data-toggle="tab" href="#publication-tab"> Publications </a> </li> <li><a data-toggle="tab" href="#project-tab">Projects</a></li> <li class="dropdown"> <a class="dropdown-toggle" data-toggle="dropdown" href="#"> About me <b class="caret"></b> </a> <ul class="dropdown-menu"> <li><a data-toggle="tab" href="#education-tab">Education</a></li> <li><a data-toggle="tab" href="#career-tab">Career</a></li> <li><a data-toggle="tab" href="#contact-tab">Contact</a></li> </ul> </li> </ul>