网页大屏适配 使用css的scale方法 缺点是两边会有留白;

网页大屏适配 使用css的scale方法 缺点是两边会有留白;

网页大屏适配 使用css的scale方法 缺点是两边会有留白;_第1张图片

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width= , initial-scale=1.0">
    <title>Document</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }

        html,
        body {
            width: 100vw;
            height: 100vh;
            background-color: blue;
        }

        #container {
            width: 100%;
            height: 100%;
        }

        .box {
            width: 1920px;
            height: 1080px;
            background-color: red;
            position: fixed;
            transform-origin: left top;
            left: 50%;
            top: 50%;
        }

        .top {
            width: 100px;
            height: 100px;
            background-color: aquamarine;
            margin-left: 100px;
        }

        .bottom {
            width: 100px;
            height: 100px;
            background-color: skyblue;
            margin-left: 100px;
            margin-top: 100px;
        }
    </style>
</head>

<body>
    <div id="container">
        <div class="box">
            <div class="top">测试文字111111111</div>
            <div class="bottom">
                Lorem ipsum, dolor sit amet
            </div>
        </div>
    </div>
</body>

</html>
<script>
    // js控制屏幕的放大与缩小
    let box = document.querySelector(".box");
    box.style.transform = `scale(${getScale()})  translate(-50%,-50%)`;
    // 计算缩放比例
    function getScale(w = 1920, h = 1080) {
        const ww = window.innerWidth / w;
        const wh = window.innerHeight / h;
        return ww < wh ? ww : wh
    };
    window.addEventListener("resize", function () {
        box.style.transform = `scale(${getScale()})  translate(-50%,-50%)`;
    })
</script>

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