JS/CSS 在屏幕底部弹出消息

2018-09-09 网页编程网 网页编程网

<html><head></head><body><h2>Snackbar / Toast</h2>
<p>在屏幕底部弹出消息,作用与使用方法都与Toast类似</p>
<p>点击按钮显示提示信息，3 秒后消失</p>

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

<div id="snackbar" class="">一些文本..</div><style>#snackbar {
    visibility: hidden;
    min-width: 250px;
    margin-left: -125px;
    background-color: #333;
    color: #fff;
    text-align: center;
    border-radius: 2px;
    padding: 16px;
    position: fixed;
    z-index: 1;
    left: 50%;
    bottom: 30px;
    font-size: 17px;
}

#snackbar.show {
    visibility: visible;
    -webkit-animation: fadein 0.5s, fadeout 0.5s 2.5s;
    animation: fadein 0.5s, fadeout 0.5s 2.5s;
}

@-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;}
}</style><script>function myFunction() {
    var x = document.getElementById("snackbar")
    x.className = "show";
    setTimeout(function(){ x.className = x.className.replace("show", ""); }, 3000);
}</script></body></html>

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