Question

我刚刚在codecademy上完成了HTML / CSS，JavaScript，jQuery和php的基础知识。我想在codecademy codebits中建立一个带有html / css和jquery的网站。现在我的导航菜单很奇怪。主导航菜单（主要）似乎没问题。但是当将鼠标悬停在其中一个具有子菜单的菜单上时，主菜单会与下拉菜单一起下移。我整天都试图解决它，但无济于事:( 我试过显示：内联，显示：内联块，显示：块但是它们没有帮助。我也试过设置位置：不同的设置，但他们也没有帮助。我的HTML似乎对我好，但也许有一些错误。我怀疑我的css，但经过一整天的努力，我已经筋疲力尽了:(

我的HTML脚本：

<!DOCTYPE html>
<html>
<head>
<title>A first complete project</title>
<link type = "text/css" rel = "stylesheet" href = "style.css">
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<script src="http://code.jquery.com/ui/1.9.2/jquery-ui.js"></script>
<script type = "text/javascript" src = "script.js"></script>
</head>

<body>
<div class = "header">  <!--Header Area -->
    <ul class = "mainMenu">  <!-- The main nav menu -->
        <li><a href = "#">Home</a></li>
        <li>About Us</li>
        <li>Contact Us</li>
        <li id = "services">Services 
        <!--Creating sub menu-->
            <ul class = "servicesSubMenu">
                <li>Basic Web Design</li>
                <li>Pro Web Design</li>
                <li>Advanced Web Design</li>
                <li id = "wordpressWebDesign">Wordpress Web 
                Design
                <!--Creating Sub-sub menu-->
                    <ul class = "wordpressSubMenu">
                        <li>Wordpress Installation</li>
                        <li>Wordpress customization</li>
                    </ul> 
                </li>     
            </ul>
        </li>    
    </ul>

</div>

<!--creating div class wrapper for sliderArea-->
<div class = "wrapper">
    <div class = "slideArea"> <!--Creating the slider-->

    </div>
</div>

<!--Creating the main footer-->
<div id = "mainFooter">
    <p>Copyright &copy; 2014 <a href = "https://www.hostbarrack.com">Hostbarrack</a></p>
</div>

</body>

</html>

我的css：

/* ==== Settings for the main body
================================================= */
body {
    background-color: #454545;
}

/*======  Settings for the main nav menu
================================================== */
.mainMenu {
  border-radius: 10px; 
  background-color: #555555;
  font-family: seriff;
  font-weight: bold;
  color: #389803;
  font-size: 17px;
  height: 50px;
  line-height: 30px;
  padding-right: 80px;
}

.mainMenu li {
    position: relative;
    display: inline-block;
    margin-left: 10px;
    margin-top: 10px;
    margin-bottom: 10px;
    list-style: none;
    padding: 0 20px;
}

.mainMenu a {
    text-decoration: none;
    display: block;
    color: #389803;
    height: 40px;
}

/* === Settings for the sub menu of the 'Services' Button
===================================================== */
.servicesSubMenu {
  font-family: seriff;
  font-weight: bold;
  color: #389803;
  font-size: 17px;
  margin-top: 10px;
}

.servicesSubmenu li {
    border: 1px solid red;
    border-radius: 8px;
    list-style: none;
    background-color: #454545;
    height: auto;
    width: 200px;
    padding: 10px;
    margin: 1px;
    display: block;

}

/* === =Settings for the sub menu of 'Wordpress Web design' which is a sub menu of 'Services'
=========================================================*/
.wordpressSubMenu li {
    background-color: #606060;
}

/* ======== Settings for the slider area of home-page.
==================================================== */
.slideArea {
    border-radius: 15px;
    background-color: #909090;
    height: 500px;
    width: auto;
    margin: 10px, 10px, 10px, 10px;
}

/* === Settings for the main footer area 
==================================================== */
#mainFooter {
    text-align: center;
    font-weight: bold;
}

#mainFooter a {
    color: #FEFE79;
/*does not work. check it again and remove this comment after finding the solution*/    
}

我的jQuery代码：

var main = function() {
    $(".servicesSubMenu").hide(); /* Hide sub menu when document
                                    loads */

    /* When hovering over 'Services' button in main nav menu */
    $("#services").hover(function() {
        $(".servicesSubMenu").slideToggle(80);
        $(".wordpressSubMenu").hide(); /* Hide sub-sub menu */
    });

    /* When hovering over sub-sub menu 'Wordpress Web Design'
      inside 'Services button. */
    $("#wordpressWebDesign").hover(function() {
      $(".wordpressSubMenu").slideToggle(80);
    });
}

$(document).ready(main);

您还可以在http://www.codecademy.com/sunoy14/codebits/r316c查看我的代码和测试页请在全屏和较小的屏幕中查看codebits。显示不同的问题布局。我非常感谢你的帮助。

谢谢。

Answer 1

我在网站上看了你的代码。您尚未设置位置值。位置更改将显示的位置，默认情况下，它设置为相对。通过将其更改为绝对值，元素不会受到周围元素的影响。

在CSS文件中尝试此代码。

.servicesSubMenu {
  font-family: seriff;
  font-weight: bold;
  color: #389803;
  font-size: 17px;
  margin-top: 10px;
  position:absolute;
}

Answer 2

以下是您要求的导航栏的一些代码示例我不知道这是否是您想要的方式，因为我不使用任何Javascript。

＆＃13;

.navigation {
  background-color: gray;
  list-style-type: none;
  height: 50px;
}
.menu-item {
  display: inline-block;
  width: 80px;
  text-align: center;
  height: 100%;
}
.menu-item {
  padding-top: 15px;
}
.menu-item:hover {
  background-color: #555;
}
.menu-item .sub-item {
  display: none;
}
.menu-item:hover .sub-item {
  position: absolute;
  width: 80px;
  display: block;
    border-bottom: 1px solid black;
  background-color: red;
}
.sub-item: hover {
  display: block;
}
.menu-item .sub-item a {
  display: block;
  height: 20px;
  border-top: 1px solid black;
}

＆＃13;

<nav>
  <div class="navigation">
    <div class="menu-item">
      <div class="name">Home</div>
      <div class="sub-item">
        <a>link</a>
        <a>link</a>
      </div>
    </div>
    <div class="menu-item">
      <div class="name">Contact</div>
      <div class="sub-item">
        <a>link</a>
        <a>link</a>
      </div>
    </div>
  </div>
</nav>

＆＃13;

无法使用HTML / CSS和jQuery创建导航菜单

2 个答案: