对齐菜单右侧的下拉菜单

Question

我正在创建一个网站，菜单中有两个下拉菜单，一个左对齐，另一个右对齐菜单。我尝试使用空格对齐另一个下拉菜单，但sub ul标签根本不可见。下面是HTML和CSS供参考。请提出建议。

<script type="text/javascript"> 
 
$(document).ready(function(){ 
 
    $("#dropbtn").click(function(){ 
 
     $("#moreMgmt").toggleClass("show"); 
 
    }); 
 
    $("#dropbtn2").click(function(){ 
 
     $("#moreTech").toggleClass("show"); 
 
    }); 
 
});

<style> 
 
body{ 
 
    font-family:Calibri; 
 
} 
 
.header{ 
 
    border:1px solid red; 
 
} 
 
.menu{ 
 
    overflow:hidden; 
 
    background-color:#333; 
 
    font-family:Arial; 
 
} 
 
.menu a { 
 
    float: left; 
 
    font-size: 16px; 
 
    color: white; 
 
    text-align: center; 
 
    padding: 14px 16px; 
 
    text-decoration: none; 
 
} 
 
.dropdown { 
 
    float: left; 
 
    overflow: hidden; 
 
} 
 
.dropdown #dropbtn { 
 
    cursor: pointer; 
 
    font-size: 16px;  
 
    border: none; 
 
    outline: none; 
 
    color: white; 
 
    padding: 14px 16px; 
 
    background-color:#333; 
 
} 
 
.menu a:hover, .dropdown:hover #dropbtn { 
 
    background-color: limegreen; 
 
} 
 
.dropdown-content { 
 
    display: none; 
 
    position: absolute; 
 
    background-color: #f9f9f9; 
 
    min-width: 160px; 
 
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2); 
 
    z-index: 1; 
 
} 
 
.dropdown-content a { 
 
    float: none; 
 
    color: black; 
 
    padding: 12px 16px; 
 
    text-decoration: none; 
 
    display: block; 
 
    text-align: left; 
 
} 
 
.dropdown-content a:hover { 
 
    background-color: #ddd; 
 
} 
 
.show { 
 
    display: block; 
 
} 
 

 
#dropbtn2 { 
 
    background-color: #4CAF50; 
 
    color: white; 
 
    padding: 16px; 
 
    font-size: 16px; 
 
    border: none; 
 
    cursor: pointer; 
 
} 
 

 
#dropbtn2:hover, #dropbtn2:focus { 
 
    background-color: #3e8e41; 
 
} 
 

 
.dropdown2 { 
 
    float: right; 
 
    position: relative; 
 
    display: inline-block; 
 
    
 
} 
 

 
.dropdown-content2 { 
 
    display: none; 
 
    position: absolute; 
 
    background-color: #f9f9f9; 
 
    min-width: 160px; 
 
    overflow: auto; 
 
    box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2); 
 
    right: 0; 
 
    left:auto; 
 
    z-index: 1; 
 
} 
 

 
.dropdown-content2 a { 
 
    color: black; 
 
    padding: 12px 16px; 
 
    text-decoration: none; 
 
    display: block; 
 
} 
 

 
.dropdown2 a:hover {background-color: #f1f1f1}

<div class="header"> 
 
    <h2>My Website</h2> 
 
</div> 
 

 
<!-- adding menu--> 
 
<div class = "menu"> 
 
    <a href="#">Home</a> 
 
    <a href="#">Home</a> 
 
    <div class="dropdown"> 
 
     <button id="dropbtn">More</button> 
 
      <div class="dropdown-content" id="moreMgmt"> 
 
      <a href="#">Home</a> 
 
       <a href="#">Home</a> 
 
       <a href="#">Home</a> 
 
      </div> 
 
     </div> 
 
     <div class="dropdown2"> 
 
      <button id="dropbtn2">More</button> 
 
      <div class="dropdown-content2" id="moreTech"> 
 
       <a href="#">Home</a> 
 
       <a href="#">Home</a> 
 
       <a href="#">Home</a> 
 
      </div> 
 
     </div> 
 
</div>

我已经使用jQuery来切换第一个下拉的UL标签，但它不是与第二个可能的。在此先感谢

Answer 1

您可以在您要在合适的位置上dorpdown使用float:right和调用下拉元素时，这样你就不会重复一遍代码，你可能会想使用类，而不是ID的

见代码片段：

$(document).ready(function() { 
 
    $(".dropdown button").click(function() { 
 
    $(this).next().toggleClass("show"); 
 
    }); 
 
});

font-family:Calibri; 
 

 
} 
 
.header { 
 
    border: 1px solid red; 
 
} 
 
.menu { 
 
    overflow: hidden; 
 
    background-color: #333; 
 
    font-family: Arial; 
 
} 
 
.menu a { 
 
    float: left; 
 
    font-size: 16px; 
 
    color: white; 
 
    text-align: center; 
 
    padding: 14px 16px; 
 
    text-decoration: none; 
 
} 
 
.dropdown { 
 
    float: left; 
 
    overflow: hidden; 
 
} 
 
.dropdown button { 
 
    cursor: pointer; 
 
    font-size: 16px; 
 
    border: none; 
 
    outline: none; 
 
    color: white; 
 
    padding: 14px 16px; 
 
    background-color: #333; 
 
} 
 
.menu a:hover, 
 
.dropdown:hover button { 
 
    background-color: limegreen; 
 
} 
 
.dropdown-content { 
 
    display: none; 
 
    position: absolute; 
 
    background-color: #f9f9f9; 
 
    min-width: 160px; 
 
    box-shadow: 0px 8px 16px 0px rgba(0, 0, 0, 0.2); 
 
    z-index: 1; 
 
} 
 
.dropdown-content a { 
 
    float: none; 
 
    color: black; 
 
    padding: 12px 16px; 
 
    text-decoration: none; 
 
    display: block; 
 
    text-align: left; 
 
} 
 
.dropdown-content a:hover { 
 
    background-color: #ddd; 
 
} 
 
.show { 
 
    display: block; 
 
} 
 
.dropdown-right { 
 
    float: right; 
 
} 
 
.dropdown-right .dropdown-content{ 
 
    right: 0; 
 
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> 
 
<div class="header"> 
 
    <h2>My Website</h2> 
 
</div> 
 

 
<!-- adding menu--> 
 
<div class="menu"> 
 
    <a href="#">Home</a> 
 
    <a href="#">Home</a> 
 
    <div class="dropdown"> 
 
    <button>More</button> 
 
    <div class="dropdown-content" id="moreMgmt"> 
 
     <a href="#">Home</a> 
 
     <a href="#">Home</a> 
 
     <a href="#">Home</a> 
 
    </div> 
 
    </div> 
 
    <div class="dropdown dropdown-right"> 
 
    <button>right</button> 
 
    <div class="dropdown-content" id="moreMgmt"> 
 
     <a href="#">Home</a> 
 
     <a href="#">Home</a> 
 
     <a href="#">Home</a> 
 
    </div> 
 
    </div> 
 
</div>