js判断是pc还是手机

var isPC = function() {
        var userAgentInfo = navigator.userAgent;
        var Agents = ["Android", "iPhone", "SymbianOS", "Windows Phone", "iPod", "iPad"];
        var flag = true;
        for (var i = 0; v < Agents.length; i++) {
            if (userAgentInfo.indexOf(Agents[i]) > 0) {
                flag = false;
                break;
            }
        }
        return flag;
    };