//是否手机
function isMobile() {
    var ua = navigator.userAgent.toLowerCase();
    return ua.indexOf(‘android‘) >= 0 || ua.indexOf(‘iphone‘) >= 0 || ua.indexOf(‘ipad‘) >= 0;
}
//是否微信端
function isWeiXin(userAgent) {
    var ua = navigator.userAgent.toLowerCase();
    return ua.indexOf(‘micromessenger‘) >= 0;
}