手机端适配rem代码片段

时间：2023-12-26 09:12:07
<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <meta name="viewport" content="width=device-width, initial-scale=1.0">

    <title>Document</title>

</head>

<script>

    function getRem (){

           var currentWidth = document.documentElement.clientWidth;

            var fontSize  = 100;

            var width = 320;

            var currentFontsize = currentWidth / width * fontSize;

            document.querySelector('html').style.fontSize = currentFontsize + 'px';

    }

    getRem();

    window.onresize = function(){

        getRem();

    }

</script>

<style>

    p {

        font-size: 1rem;

    }

</style>

<body>

    <p>测试</p>

</body>

</html>

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