如何操作 - 响应式底部导航

了解如何使用 CSS 和 JavaScript 创建响应式底部导航菜单。

响应式底部导航

调整大小浏览器窗口以查看响应式导航菜单的工作原理：

创建响应式底部导航栏

步骤1）添加HTML：

示例

<div class="navbar" id="myNavbar">
<a href="#home">Home</a>
<a href="#news">News</a>
<a href="#contact">Contact</a>
<a href="#about">About</a>
<a href="javascript:void(0);" class="icon" onclick="myFunction()">☰</a>
</div>

class="icon" 的链接用于在小屏幕上打开和关闭导航栏。

步骤2）添加CSS：

示例

/* Place the navbar at the bottom of the page, and make it stick */
.navbar {
  background-color: #333;
  overflow: hidden;
  position: fixed;
  bottom: 0;
  width: 100%;
}

/* Style the links inside the navigation bar */
.navbar a {
  float: left;
  display: block;
  color: #f2f2f2;
  text-align: center;
padding: 14px 16px;
text-decoration: none;
  font-size: 17px;
}

/* Change the color of links on hover */
.navbar a:hover {
background-color: #ddd;
color: black;
}

/* Add a green background color to the active link */
.navbar a.active {
background-color: #04AA6D;
color: white;
}

/* Hide the link that should open and close the navbar on small screens */
.navbar .icon {
  display: none;
}

添加媒体查询：

示例

/* When the screen is less than 600 pixels wide, hide all links, except for the first one ("Home"). Show the link that contains should open and close the navbar (.icon) */
@media screen and (max-width: 600px) {
.navbar a:not(:first-child) {display: none;}
.navbar a.icon {
    float: right;
    display: block;
}
}

/* The "responsive" class is added to the navbar with JavaScript when the user clicks on the icon. This class makes the navbar look good on small screens (display the links vertically instead of horizontally) */
@media screen and (max-width: 600px) {
.navbar.responsive a.icon {
    position: absolute;
    right: 0;
    bottom: 0;
}
.navbar.responsive a {
    float: none;
    display: block;
    text-align: left;
}
}

步骤 3) 添加 JavaScript：

示例

/* Toggle between adding and removing the "responsive" class to the navbar when the user clicks on the icon */
function myFunction() {
  var x = document.getElementById("myNavbar");
if (x.className === "navbar") {
    x.className += " responsive";
  } else {
    x.className = "navbar";
  }
}

亲自试一试 »

提示：去我们的CSS 导航栏教程了解有关导航栏的更多信息。