how to set active class to nav menu from twitter b

2020-02-02 06:58发布

站内文章 / JavaScript

39 0

问题:

I'm new to the twitter bootstrap. Using there navigation menus . I'm trying to set active class to selected menu. my menu is -

<div class="nav-collapse">
  <ul class="nav">
    <li id="home" class="active"><a href="~/Home/Index">Home</a></li>
    <li><a href="#">Project</a></li>
    <li><a href="#">Customer</a></li>
    <li><a href="#">Staff</a></li>
    <li  id="broker"><a href="~/Home/Broker">Broker</a></li>
    <li><a href="#">Sale</a></li>
  </ul>
</div>

I tried following thing after googling on this that i have to set active class on each page from menu like as--

<script>
  $(document).ready(function () {
    $('#home').addClass('active');
  });
</script>

but problem for above is that i set home menu selected by default. Then it always get selected. Is there any other way to do this ? , or which i can generalize and keep my js in layout file itself?

After executing application my menu looks -

after clicking on other menu item i get following result-

And i added following scripts on Index view and Broker view ---

<script>
  $(document).ready(function () {
    $('#home').addClass('active');
  });
</script>

<script>
  $(document).ready(function () {
    $('#broker').addClass('active');
  });
</script>

respectively.

回答1:

it is a workaround. try

<div class="nav-collapse">
  <ul class="nav">
    <li id="home" class="active"><a href="~/Home/Index">Home</a></li>
    <li><a href="#">Project</a></li>
    <li><a href="#">Customer</a></li>
    <li><a href="#">Staff</a></li>
    <li  id="demo"><a href="~/Home/demo">Broker</a></li>
    <li id='sale'><a href="#">Sale</a></li>
  </ul>
</div>

and on each page js add

$(document).ready(function () {
  $(".nav li").removeClass("active");//this will remove the active class from  
                                     //previously active menu item 
  $('#home').addClass('active');
  //for demo
  //$('#demo').addClass('active');
  //for sale 
  //$('#sale').addClass('active');
});

回答2:

You can use this JavaScript\jQuery code:

// Sets active link in Bootstrap menu
// Add this code in a central place used\shared by all pages
// like your _Layout.cshtml in ASP.NET MVC for example
$('a[href="' + this.location.pathname + '"]').parents('li,ul').addClass('active');

It'll set the <a>'s parent <li> and the <li>'s parent <ul> as active.

A simple solution that works!

Original source:

Bootstrap add active class to li

回答3:

I had the same problem... solved it by adding the code shown below to the Into "$(document).ready" part of my "functions.js" file which is included in every page footer. It's pretty simple. It gets the full current URL of the displayed page and compares it to the full anchor href URL. If they are the same, set anchor (li) parent as active. And do this only if anchor href value is not "#", then the bootstrap will solve it.

$(document).ready(function () {         
    $(function(){
        var current_page_URL = location.href;

        $( "a" ).each(function() {

            if ($(this).attr("href") !== "#") {

                var target_URL = $(this).prop("href");

                    if (target_URL == current_page_URL) {
                        $('nav a').parents('li, ul').removeClass('active');
                        $(this).parent('li').addClass('active');

                        return false;
                    }
            }
        }); }); });

回答4:

You could add a diffrent class onto the BODY tag on each page e.g. on the homepage you could have this:

<body class="nav-1-on">

Then this css:

.nav-1-on .nav-1 a, .nav-2-on .nav-2 a, .nav-3-on .nav-3 a, .nav-4-on .nav-4 a {
     // set your styles here
}

The NAV element:

<ul>
  <li class="nav-1"><a href="#">Home</a></li>
  <li class="nav-2"><a href="#">Services</a></li>
  <li class="nav-3"><a href="#">About</a></li>
  <li class="nav-4"><a href="#">Contact</a></li>
</ul>

Alternatively you could place a class on the BODY on each page and then grab that via jQuery and add the .active class to the correct nav item based on that tag.

回答5:

<div class="nav-collapse">
                <ul class="nav">
                    <li class="home"><a href="~/Home/Index">Home</a></li>
                    <li class="Project"><a href="#">Project</a></li>
                    <li class="Customer"><a href="#">Customer</a></li>
                    <li class="Staff"><a href="#">Staff</a></li>
                    <li class="Broker"><a href="~/Home/Broker">Broker</a></li>
                    <li class="Sale"><a href="#">Sale</a></li>
                </ul>
</div>

then for each page you add this:

//home

 $(document).ready(function () {
        $('.home').addClass('active');
    });

//Project page

$(document).ready(function () {
            $('.Project').addClass('active');
        });

//Customer page

 $(document).ready(function () {
                $('.Customer').addClass('active');
            });

//staff page

 $(document).ready(function () {
                $('.Staff').addClass('active');
            });

回答6:

<div class="nav-collapse">
                <ul class="nav">
                    <li class="home"><a href="~/Home/Index">Home</a></li>
                    <li class="Project"><a href="#">Project</a></li>
                    <li class="Customer"><a href="#">Customer</a></li>
                    <li class="Staff"><a href="#">Staff</a></li>
                    <li class="Broker"><a href="~/Home/Broker">Broker</a></li>
                    <li class="Sale"><a href="#">Sale</a></li>
                </ul>
</div>

$('ul.nav>li.home>a').click();  // first. same to all the other options changing the li class name

回答7:

(function (window) {
bs3Utils = {}
bs3Utils.nav = {
    activeTab: function (tabId) {
        /// <summary>
        /// 设置需要展现的tab
        /// </summary>
        /// <param name="tabId"></param>
        $('.nav-tabs a[href="#' + tabId + '"]').tab('show');
    }
}
window.bs3Utils = bs3Utils;
})(window);

example:

var _actvieTab = _type == '0' ? 'portlet_tab2_1' : 'portlet_tab2_2';
            bs3Utils.nav.activeTab(_actvieTab);
                        <ul class="nav nav-tabs">
                        <li class="active">
                            <a href="#portlet_tab2_1" data-toggle="tab">箱-单灯节点 </a>
                        </li>
                        <li>
                            <a href="#portlet_tab2_2" data-toggle="tab">箱-灯组节点 </a>
                        </li>

                    </ul>

回答8:

$( ".nav li" ).click(function() {
        $('.nav li').removeClass('active');
        $(this).addClass('active');
    });

check this out.

回答9:

For single-page sites where the menu items simply jump down to other sections of the page, this simple solution works for me:

$('.nav li').on('click', function(){
    $('.nav li').removeClass('active');
    $(this).addClass('active');
  });

回答10:

For single page sites, the following is what I used. It not only sets the active element based on what's been clicked but it also checks for a hash value within the URL location on initial page load.

$(document).ready(function () {

    var removeActive = function() {
        $( "nav a" ).parents( "li, ul" ).removeClass("active");
    };

    $( ".nav li" ).click(function() {
        removeActive();
        $(this).addClass( "active" );
    });

    removeActive();
    $( "a[href='" + location.hash + "']" ).parent( "li" ).addClass( "active" );

});

回答11:

I am using Flask Bootstrap. My solution is a little bit simpler because my template already receives the option or choice as a parameter from Flask.

var choice = document.getElementById("{{ item_kind }}");
choice.className += "active";

First line, js code gets the element. So, you should identify each of the elements with a id. I'll show an example below. Second line, you add the class active. You can see html ids below.

<div class="navbar-collapse collapse">
    <ul class="nav navbar-nav"> 
        <li>
            <a id="speed" href="{{ url_for('list_gold_per_item',item_kind='speed',level='2') }}">
                <h2>Speed</h2>
            </a>
        </li>
        <li>
            <a id="life" href="{{ url_for('list_gold_per_item',item_kind='life',level='3') }}">
                <h2>Life</h2>
            </a>
        </li>
    </ul>
</div>

回答12:

For those using Codeigniter, add this below your sidebar menu,

<script>
    $(document).ready(function () {
        $(".nav li").removeClass("active");
        var currentUrl = "<?php  echo current_url();  ?>";
        $('a[href="' + currentUrl + '"]').parents('li,ul').addClass('active');
    });
</script>

回答13:

I just added a custom class to the ul section named target-active

<ul class="nav navbar-nav target-active">
    <li><a href="/">HOME</a></li>
    <li><a href="find-truck">FIND A TRUCK</a></li>
    <li><a href="our-service">OUR SERVICES</a></li>
    <li><a href="about-us">ABOUT US</a></li>
</ul>

If each li tags click get a new page from different place or same place, no need to add jquery removeClass function.

Add simple one line jquery code to each page to get your desired result

1st link page

$(function(){
    $(".target-active").find("[href='/']").parent().addClass("active");
});

2nd link page

$(function(){
    $(".target-active").find("[href=find-truck]").parent().addClass("active");
});

3rd link page

$(function(){
    $(".target-active").find("[href=our-service]").parent().addClass("active");
});

4th link page

$(function(){
    $(".target-active").find("[href=about-us]").parent().addClass("active");
});

标签： javascript jquery css twitter-bootstrap menu

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