根据屏幕大小，加载不同大小的图片 

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<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width,initial-scale=1">
    <title>Document</title>
    <script>
        document.createElement( "picture" );
       </script>
</head>
<body>
    <picture>
            <source srcset="pic1.png" media="(max-width: 600px)">
            <source srcset="pic2.png" media="(max-width: 800px)">
            <img srcset="pic3.png" alt="pic">
        </picture>
</body>
</html>

 

posted @ 2017-08-19 09:09  似  阅读(866)  评论(0)  编辑  收藏  举报