如何使用jQuery更改bootstrap中的.active類

Question

我正在使用django，並嘗試創建基本模板。 我想在導航欄鏈接中更改.active類，該類指向單獨的鏈接，例如。 navbar中的主頁鏈接指向home.html，navbar中的About Us鏈接指向about.html。

我也在jquery中使用了一個代碼來做到這一點，但是它不起作用。 請建議采取任何方法。

請不要打擾我是新手！！！

<!DOCTYPE html>
<html>
<head>
    {% load staticfiles %}
    <meta charset="UTF-8">

    <title>{% block title %}{% endblock %} | Vasu Genset Pvt. Ltd.</title>

    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">

    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>

    <link rel="stylesheet" href="https://bootswatch.com/paper/bootstrap.min.css">

    <link rel="stylesheet" type="text/css" href="{% static 'index/css/index.css' %}">

    <link rel="stylesheet" href="{% static 'index/css/products-style.css' %}">

    {% block style %}{% endblock %}


</head>
<body>

    <nav class="navbar navbar-default">
        <div class="container">
            <div class="navbar-header">
                <a class="navbar-brand" href="/home/" >Vasu Genset Pvt. Ltd.</a>
                <button class="navbar-toggle collapsed" data-toggle="collapse" data-target="#mydropdown">
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                </button>
            </div>
            <div class="collapse navbar-collapse" id="mydropdown">
                <ul class="nav navbar-nav navbar-right" id="navbar-change">
                    <li class="active"><a href="/home/">Home</a></li>
                    <li><a href="/aboutus/">About Us</a></li>
                    <li class="dropdown">
                    <a href="/productsandservices/" class="dropdown-toggle" data-toggle="dropdown">Products & Services <span class="caret"></span></a>
                        <ul class="dropdown-menu">
                            <li><a href="/generatorrepair/">Generator Repair</a></li>
                            <li><a href="/generatormaintenance/">Generator Maintenance</a></li>
                            <li><a href="/alternator/">Alternator Repair & Maintenance</a></li>
                            <li><a href="/amc/">AMC Service Provider</a></li>
                            <li><a href="/spareparts/">Spare Parts</a></li>
                            <li><a href="/generatorrentalhire/">Generator Rental & Hire</a></li>
                            <li><a href="/synchronizing/">Synchronizing Panel</a></li>
                            <li><a href="/amfpanel/">AMF Panel</a></li>
                            <li><a href="acousticenclosures">Acoustic Enclosures</a></li>
                        </ul>
                    </li>
                    <li><a href="/contactus/">Contact Us</a></li>
                </ul>
            </div>
        </div>
    </nav>

    {% block body %}
    {% endblock %}

    <footer class="text-center">
            <div class="container-fluid">
                <div class="row">
                    <div class="col-xs-offset-1 col-xs-10 col-md-offset-3 col-md-6">
                        <h4>Copyright &copy; Vasu Genset Pvt. Ltd.</h4>
                    </div>
                </div>
            </div>
    </footer>


</body>

    <!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
    <!-- Include all compiled plugins (below), or include individual files as needed -->
    <script src="{% static 'index/js/bootstrap.min.js' %}"></script>

    <script>
        $(document).ready(function () {
            $('.nav li').click(function(e) {

                $('.nav li').removeClass('active');

                var $this = $(this);
                if (!$this.hasClass('active')) {
                    $this.addClass('active');
                }
                //e.preventDefault();
            });
        });
    </script>



</html>

Answer 1

您的代碼可以工作，但是會在x嵌套的ul中觸發x時間（取消注釋該行即可在控制台中查看單擊時發生的情況）。 根據您期望的行為，僅停止事件傳播就可以解決問題。 （加上if (!$this.hasClass('active'))將始終返回true，因為您剛剛刪除了nav中包含的所有li中的所有類'active'。

 $('.nav li').click(function(e) { //console.log(e.currentTarget,"//",e.target,"//",this); e.stopPropagation(); $('.nav li').removeClass('active'); $(this).addClass('active'); });

 .active{ background-color:red; }

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> <nav class="navbar navbar-default"> <div class="container"> <div class="navbar-header"> <a class="navbar-brand" href="#/">Vasu Genset Pvt. Ltd.</a> <button class="navbar-toggle collapsed" data-toggle="collapse" data-target="#mydropdown"> <span class="icon-bar"></span> <span class="icon-bar"></span> <span class="icon-bar"></span> </button> </div> <div class="collapse navbar-collapse" id="mydropdown"> <ul class="nav navbar-nav navbar-right" id="navbar-change"> <li class="active"><a href="#/">Home</a></li> <li><a href="#/">About Us</a></li> <li class="dropdown"> <a href="#/" class="dropdown-toggle" data-toggle="dropdown">Products & Services <span class="caret"></span></a> <ul class="dropdown-menu"> <li><a href="#/">Generator Repair</a></li> <li><a href="#/">Generator Maintenance</a></li> <li><a href="#/">Alternator Repair & Maintenance</a></li> <li><a href="#/">AMC Service Provider</a></li> <li><a href="#/">Spare Parts</a></li> <li><a href="#/">Generator Rental & Hire</a></li> <li><a href="#/">Synchronizing Panel</a></li> <li><a href="#/">AMF Panel</a></li> <li><a href="#/">Acoustic Enclosures</a></li> </ul> </li> <li><a href="#/">Contact Us</a></li> </ul> </div> </div> </nav>

如何使用jQuery更改bootstrap中的.active類

問題描述

1 個解決方案

解決方案1
0 2017-02-09 22:36:53

如何使用jQuery更改bootstrap中的.active類

問題描述

1 個解決方案

解決方案1 0 2017-02-09 22:36:53

解決方案1
0 2017-02-09 22:36:53