操作方法 - 小吃店/吐司

了解如何使用 CSS 和 JavaScript 创建小吃栏/吐司。

小吃店/吐司

快捷栏通常用作工具提示/弹出窗口，在屏幕底部显示消息。

单击该按钮可显示小吃栏。 3秒后就会消失。

有的发短信有的留言..

创建一个信息栏

步骤1）添加HTML：

示例

<button onclick="myFunction()">Show Snackbar</button>


<div id="snackbar">Some text some message..</div>

步骤2）添加CSS：

设置小吃栏的样式并添加动画：

示例

/* The snackbar - position it at the bottom and in the middle of the screen */
#snackbar {
  visibility: hidden; /* Hidden by default. Visible on click */
  min-width: 250px; /* Set a default minimum width */
  margin-left: -125px; /* Divide value of min-width by 2 */
  background-color: #333; /* Black background color */
color: #fff; /* White text color */
text-align: center; /* Centered text */
border-radius: 2px; /* Rounded borders */
padding: 16px; /* Padding */
position: fixed; /* Sit on top of the screen */
z-index: 1; /* Add a z-index if needed */
  left: 50%; /* Center the snackbar */
bottom: 30px; /* 30px from the bottom */
}

/* Show the snackbar when clicking on a button (class added with JavaScript) */
#snackbar.show {
  visibility: visible; /* Show the snackbar */
/* Add animation: Take 0.5 seconds to fade in and out the snackbar.
However, delay the fade out process for 2.5 seconds */
-webkit-animation: fadein 0.5s, fadeout 0.5s 2.5s;
  animation: fadein 0.5s, fadeout 0.5s 2.5s;
}

/* Animations to fade the snackbar in and out */
@-webkit-keyframes fadein {
from {bottom: 0; opacity: 0;}
to {bottom: 30px; opacity: 1;}
}

@keyframes fadein {
  from {bottom: 0; opacity: 0;}
  to {bottom: 30px; opacity: 1;}
}

@-webkit-keyframes fadeout {
  from {bottom: 30px; opacity: 1;}
  to {bottom: 0; opacity: 0;}
}

@keyframes fadeout {
  from {bottom: 30px; opacity: 1;}
  to {bottom: 0; opacity: 0;}
}

步骤 3) 添加 JavaScript：

通过单击按钮，使用 JavaScript 将"show" 类添加到小吃栏容器：

示例

function myFunction() {
// Get the snackbar DIV
  var x = document.getElementById("snackbar");

// Add the "show" class to DIV
x.className = "show";

  // After 3 seconds, remove the show class from DIV
  setTimeout(function(){ x.className = x.className.replace("show", ""); }, 3000);
}

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