利用navigator对象判断设备类型

function getTerminalType() {
    //获取navigator对象
    var o = navigator.userAgent,
        t = "";
    if (/iPhone|iPad/.test(o) && !/android/i.test(o)) {
        t = "ios";
    } else if (/android/i.test(o)) {
        t = "android";
    } else if (/windows/i.test(o)) {
        t = "windows";
    }
    console.log(t);
    return t;
}

从百度js中提取