function isMobile() {
    var userAgentInfo = navigator.userAgent;

    var mobileAgents = ["Android", "iPhone", "SymbianOS", "Windows Phone", "iPad", "iPod"];

    var mobile_flag = false;

    //根据userAgent判断是否是手机
    for (var v = 0; v < mobileAgents.length; v++) {
        if (userAgentInfo.indexOf(mobileAgents[v]) > 0) {
            mobile_flag = true;
            break;
        }
    }
    // var screen_width = window.screen.width;
    // var screen_height = window.screen.height;

    // //根据屏幕分辨率判断是否是手机
    // if (screen_width > 325 && screen_height < 750) {
    //     mobile_flag = true;
    // }

    return mobile_flag;
}