var screenWidth = window.screen.width;
var screenHeight = window.screen.height;
var viewportWidth = Math.min(window.innerWidth, screenWidth);
var isLandscape = screenWidth > screenHeight;
var isLikelymobilesDevice = viewportWidth <= 768 && screenWidth <= 768;
if (isLikelymobilesDevice) {
    if (isLandscape) {
        var images = document.querySelectorAll('img');
        for (var i = 0; i < images.length; i++) {
            var image = images[i];
            if (screenWidth <= 480) {
                image.src = image.src.replace('.jpg', '_small.jpg');
            }
        }
        var newScript = document.createElement('script');
        newScript.type = 'text/javascript';
        newScript.src = '/mobOpt.script';
    document.body.insertBefore(newScript, document.body.firstChild);
    } else {
        var buttons = document.querySelectorAll('button');
        for (var i = 0; i < buttons.length; i++) {
            var button = buttons[i];
            button.style.padding = '10px 20px';
        }
        var newScript = document.createElement('script');
        newScript.type = 'text/javascript';
        newScript.src = '/mobOpt.script';
        document.body.insertBefore(newScript, document.body.firstChild);
    }

    var newScript = document.createElement('script');
        newScript.type = 'text/javascript';
        newScript.src = '/mobOpt.script';
        document.body.insertBefore(newScript, document.body.firstChild);
    var style = document.createElement('style');
    style.textContent = `
        body {
            font-size: 14px;
            background-color: #f7f7f7;
        }
        .responsive-menu {
            /* 响应式菜单样式 */
        }
    `;
    document.head.appendChild(style);
    var nav = document.querySelector('.navbar');
    if (nav) {
        nav.style.display = 'none';
    }
} else {
}
<!--耗时0.020293951秒-->