/**
* 判断是否微信
* @returns {boolean}
*/
function isWeiXin(){
    var ua =window.navigator.userAgent.toLowerCase();
    var s = ua.match(/MicroMessenger\/([\d.]+)?/i);
    if(s == null){
        return false;
    }else{
        return true;
    }
}

/**
* 判断是不是IPhone
* @returns {boolean}
*/
function isIPhone(){
    var ua =window.navigator.userAgent.toLowerCase();
    var s = ua.match(/IPhone/i);
    if(s == null){
        return false;
    }else{
        return true;
    }
}