transparent/transparent.html at master · ZHOUYUANN/transparent · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
           content="maximum-scale=1.0,minimum-scale=1.0,user-scalable=0,width=device-width,initial-scale=1.0"/>
    <title>Title</title>
    <style>
        body,html{
            background: #dddddd;
        }
        *{
            margin: 0;
            padding: 0;
        }
        .bar{
            position: fixed;
            z-index: 10;
            right: 0;
            left: 0;
            height: 44px;
            padding-right: 10px;
            padding-left: 10px;
            border-bottom: 0;
            background-color: rgba(255, 255, 255, 0);
            -webkit-backface-visibility: hidden;
            backface-visibility: hidden;
        }
        p{
            height: 40px;
        }
    </style>

</head>
<body>
    <header class="bar transparent">
        <div class="title">标题</div>
    </header>
    <div>
        <p>212</p>
        <p>212</p>
        <p>212</p>
        <p>212</p>
        <p>212</p>
        <p>212</p>
        <p>212</p>
        <p>212</p>
        <p>212</p>
        <p>212</p>
        <p>212</p>
        <p>212</p>
        <p>212</p>
        <p>212</p>
        <p>212</p>
        <p>212</p>
        <p>212</p>
        <p>212</p>
        <p>212</p>
        <p>212</p>
        <p>212</p>
        <p>212</p>
        <p>212</p>
        <p>212</p>
        <p>212</p>
        <p>212</p>
    </div>
</body>
<script src="transparent.js"></script>
<script>
    new ZYTransparent({
        element: document.querySelector('.transparent'),
        top: 0,         // 距离顶部高度(到达该高度即触发)
        offset: 150,    // 滚动透明距离档设定top值后offset也会随着top向下延伸
        duration: 15    // 过渡时间
    })
</script>
</html>