javascript - 使用 Javascript 切换嵌套的侧边栏

Question

显示/隐藏时，我可以让侧栏占据整个页面，但我想要一个嵌套的侧栏。这样当它们显示/隐藏时，它只会在 div 元素中打开，而不是在整个页面中打开。- 例如，如果我的主页中有一个主要区域，当他们单击按钮或超链接时，它会悬停在侧面的内容上，而不是整个主页上。

function openNav() {
  document.getElementById("mySidebar").style.width = "250px";
  document.getElementById("main").style.marginLeft = "250px";
}

function closeNav() {
  document.getElementById("mySidebar").style.width = "0";
  document.getElementById("main").style.marginLeft = "0";
}

body {
  font-family: "Lato", sans-serif;
}

.sidebar {
  height: 100%;
  width: 0;
  position: fixed;
  z-index: 1;
  top: 0;
  left: 0;
  background-color: #111;
  overflow-x: hidden;
  transition: 0.5s;
  padding-top: 60px;
}

.sidebar a {
  padding: 8px 8px 8px 32px;
  text-decoration: none;
  font-size: 25px;
  color: #818181;
  display: block;
  transition: 0.3s;
}

.sidebar a:hover {
  color: #f1f1f1;
}

.sidebar .closebtn {
  position: absolute;
  top: 0;
  right: 25px;
  font-size: 36px;
  margin-left: 50px;
}

.openbtn {
  font-size: 20px;
  cursor: pointer;
  background-color: #111;
  color: white;
  padding: 10px 15px;
  border: none;
}

.openbtn:hover {
  background-color: #444;
}

#main {
  transition: margin-left .5s;
  padding: 16px;
}


/* On smaller screens, where height is less than 450px, change the style of the sidenav (less padding and a smaller font size) */

@media screen and (max-height: 450px) {
  .sidebar {
    padding-top: 15px;
  }
  .sidebar a {
    font-size: 18px;
  }
}

<div id="mySidebar" class="sidebar">
  <a href="javascript:void(0)" class="closebtn" onclick="closeNav()">×</a>
  <a href="#">About</a>
  <a href="#">Services</a>
  <a href="#">Clients</a>
  <a href="#">Contact</a>
</div>

<div id="main">
  <button class="openbtn" onclick="openNav()">☰ Toggle Sidebar</button>
  <h2>Collapsed Sidebar</h2>
  <p>Click on the hamburger menu/bar icon to open the sidebar, and push this content to the right.</p>
</div>

标签： javascript

Answer 1

我是对的，您不希望侧边栏挤压/缩小主要区域吗？因此，如果显示侧边栏，它应该隐藏/溢出内容吗？

只需注释掉//document.getElementById("main").style.marginLeft = "250px";

function openNav() {
  document.getElementById("mySidebar").style.width = "250px";
  //document.getElementById("main").style.marginLeft = "250px";
}

function closeNav() {
  document.getElementById("mySidebar").style.width = "0";
  document.getElementById("main").style.marginLeft = "0";
}

body {
  font-family: "Lato", sans-serif;
}

.sidebar {
  width: 0;
  position: absolute;
  z-index: 1;
  top: 0;
  left: 0;
  background-color: #111;
  overflow-x: hidden;
  transition: 0.5s;
  padding-top: 60px;
}

.sidebar a {
  padding: 8px 8px 8px 32px;
  text-decoration: none;
  font-size: 25px;
  color: #818181;
  display: block;
  transition: 0.3s;
}

.sidebar a:hover {
  color: #f1f1f1;
}

.openbtn {
  font-size: 20px;
  cursor: pointer;
  background-color: #111;
  color: white;
  padding: 10px 15px;
  border: none;
}

.openbtn:hover {
  background-color: #444;
}

#main {
  transition: margin-left .5s;
  padding: 16px;
}
.container {
  display: block;
  position: relative;
  height: 15em;
  width: 15em;
  background-color: yellow;
}


/* On smaller screens, where height is less than 450px, change the style of the sidenav (less padding and a smaller font size) */

@media screen and (max-height: 450px) {
  .sidebar {
    padding-top: 15px;
  }
  .sidebar a {
    font-size: 18px;
  }
}

<div id="main">
  <button class="openbtn" onclick="openNav()">☰ Toggle Sidebar</button>
  <h2>Collapsed Sidebar</h2>
  <p>Click on the hamburger menu/bar icon to open the sidebar, and push this content to the right.</p>
  <div class="container">
  Test Content
  <div id="mySidebar" class="sidebar">
  <a href="javascript:void(0)" class="closebtn" onclick="closeNav()">×</a>
  <a href="#">About</a>
  <a href="#">Services</a>
  <a href="#">Clients</a>
  <a href="#">Contact</a>
</div>
  </div>
</div>