如何在悬停时制作bootstrap 3下拉列表并单击? (在导航中使用,而不是导航栏)

时间:2017-01-19 01:59:14

标签: css twitter-bootstrap

我使用bootstrap 3作为桌面,只使用导航而不是导航栏 如何在悬停时下拉并点击?



<ul id="nav" class="nav nav-pills clearfix right" role="tablist">
    <li><a href="#">menuA</a></li>
    <li><a href="#">menuB</a></li>
    <li class="dropdown"><a href="#" class="dropdown-toggle" data-toggle="dropdown">menuC</a>
        <ul id="products-menu" class="dropdown-menu clearfix" role="menu">
            <li><a href="">A</a></li>
            <li><a href="">B</a></li>
            <li><a href="">C</a></li>
            <li><a href="">D</a></li>
        </ul>
    </li>
    <li><a href="#">menuD</a></li>
    <li><a href="#">menuE</a></li>
</ul>
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3 个答案:

答案 0 :(得分:12)

使用这个简单的CSS。

.dropdown:hover .dropdown-menu {
  display: block;
}
<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.1.0/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
<ul id="nav" class="nav nav-pills clearfix right" role="tablist">
    <li><a href="#">menuA</a></li>
    <li><a href="#">menuB</a></li>
    <li class="dropdown"><a href="#" class="dropdown-toggle" data-toggle="dropdown">menuC</a>
        <ul id="products-menu" class="dropdown-menu clearfix" role="menu">
            <li><a href="">A</a></li>
            <li><a href="">B</a></li>
            <li><a href="">C</a></li>
            <li><a href="">D</a></li>
        </ul>
    </li>
    <li><a href="#">menuD</a></li>
    <li><a href="#">menuE</a></li>
</ul>

答案 1 :(得分:2)

使用此脚本,因为无论如何您都使用jquery bootstrap。同时为jquery选择器提供额外的classes(最好是ids),这样就不会影响页面中的其他下拉列表。

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$(function(){
  $("#nav .dropdown").hover(
    function() {
      $('#products-menu.dropdown-menu', this).stop( true, true ).fadeIn("fast");
      $(this).toggleClass('open');
    },
    function() {
      $('#products-menu.dropdown-menu', this).stop( true, true ).fadeOut("fast");
      $(this).toggleClass('open');
    });
});
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<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/>

<ul id="nav" class="nav nav-pills clearfix right" role="tablist">
    <li><a href="#">menuA</a></li>
    <li><a href="#">menuB</a></li>
    <li class="dropdown"><a href="#" class="dropdown-toggle" data-toggle="dropdown">menuC</a>
        <ul id="products-menu" class="dropdown-menu clearfix" role="menu">
            <li><a href="">A</a></li>
            <li><a href="">B</a></li>
            <li><a href="">C</a></li>
            <li><a href="">D</a></li>
        </ul>
    </li>
    <li><a href="#">menuD</a></li>
    <li><a href="#">menuE</a></li>
</ul>
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答案 2 :(得分:1)

以上解决方案不适合移动设备,所以这是我提议的解决方案

检测其是否未触摸设备且navbar-toggle(汉堡菜单)不可见并使菜单项可以移动

也是由于导航栏和某些浏览器中的菜单之间的差距不会让你徘徊到子项<0>

作为奖励,您可以通过取消注释注释行来使菜单父链接可点击

$(function(){
    function is_touch_device() {
        return 'ontouchstart' in window        // works on most browsers 
        || navigator.maxTouchPoints;       // works on IE10/11 and Surface
    };

    if(!is_touch_device() && $('.navbar-toggle:hidden')){
      $('.dropdown-menu', this).css('margin-top',0);
      $('.dropdown').hover(function(){ 
          $('.dropdown-toggle', this).trigger('click');
          //uncomment below to make the parent item clickable
          //$('.dropdown-toggle', this).toggleClass("disabled"); 
      });			
    }
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/>

<ul id="nav" class="nav nav-pills clearfix right" role="tablist">
    <li><a href="#">menuA</a></li>
    <li><a href="#">menuB</a></li>
    <li class="dropdown"><a href="#" class="dropdown-toggle" data-toggle="dropdown">menuC</a>
        <ul id="products-menu" class="dropdown-menu clearfix" role="menu">
            <li><a href="">A</a></li>
            <li><a href="">B</a></li>
            <li><a href="">C</a></li>
            <li><a href="">D</a></li>
        </ul>
    </li>
    <li><a href="#">menuD</a></li>
    <li><a href="#">menuE</a></li>
</ul>

$(function(){
  $("#nav .dropdown").hover(
    function() {
      $('#products-menu.dropdown-menu', this).stop( true, true ).fadeIn("fast");
      $(this).toggleClass('open');
    },
    function() {
      $('#products-menu.dropdown-menu', this).stop( true, true ).fadeOut("fast");
      $(this).toggleClass('open');
    });
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/>

<ul id="nav" class="nav nav-pills clearfix right" role="tablist">
    <li><a href="#">menuA</a></li>
    <li><a href="#">menuB</a></li>
    <li class="dropdown"><a href="#" class="dropdown-toggle" data-toggle="dropdown">menuC</a>
        <ul id="products-menu" class="dropdown-menu clearfix" role="menu">
            <li><a href="">A</a></li>
            <li><a href="">B</a></li>
            <li><a href="">C</a></li>
            <li><a href="">D</a></li>
        </ul>
    </li>
    <li><a href="#">menuD</a></li>
    <li><a href="#">menuE</a></li>
</ul>