醉沁城

    function isBrowser() {
        var userAgent = navigator.userAgent;
        //微信内置浏览器
        if(userAgent.match(/MicroMessenger/i) == 'MicroMessenger') {
            return "MicroMessenger";
        }
        //QQ内置浏览器
        else if(userAgent.match(/QQ/i) == 'QQ') {
            return "QQ";
        }
        //Chrome
        else if(userAgent.match(/Chrome/i) == 'Chrome') {
            return "Chrome";
        }
        //Opera
        else if(userAgent.match(/Opera/i) == 'Opera') {
            return "Opera";
        }
        //Firefox
        else if(userAgent.match(/Firefox/i) == 'Firefox') {
            return "Firefox";
        }
        //Safari
        else if(userAgent.match(/Safari/i) == 'Safari') {
            return "Safari";
        }
        //IE
        else if(!!window.ActiveXObject || "ActiveXObject" in window) {
            return "IE";
        }
        else {
            return "未定义:"+userAgent;
        }
    }