jquery判断屏幕分辨率

$(document).ready(function() {
    var screenWidth = window.screen.width;
    var screenHeight = window.screen.height;
    console.log("屏幕宽度: " + screenWidth + "px");
    console.log("屏幕高度: " + screenHeight + "px");

    if (screenWidth < 768) {
        // 移动设备
        console.log("移动设备");
    } else if (screenWidth < 1024) {
        // 平板设备
        console.log("平板设备");
    } else {
        // 桌面设备
        console.log("桌面设备");
    }
});

$(document).ready(function() {
    var screenWidth = window.screen.width * window.devicePixelRatio;
    var screenHeight = window.screen.height * window.devicePixel.pngRatio;
    console.log("调整后的屏幕宽度: " + screenWidth + "px");
    console.log("调整后的屏幕高度: " + screenHeight + "px");
});