var a = {
    name: "Ivan",
    surname: "Ivanov",
}
var b = {
    name: "Petr",
    surname: "Petrov",
}
var c = {
    name: "Alex",
    surname: "Sidarov",
}

a.age = 20;
b.fathername = "Nikolai";
c.sex = "male";

var persons = [a,b,c,
    {
        name: "pasha",
        surname: "efimenko",
        age: 22
    }
]


document.write("<table cellpadding = 5>");
document.write("<tr>");
for (var i = 0; i < persons.length - 2; i++) {
    var br;
    br = false;
    var key = Object.keys(persons[i]);
    for (var j = 0; j < persons.length; j++) {
        var keyy = Object.keys(persons[j]);
        if(key[i] !== keyy[i]) // Проверяю совпадает ли ключ объкта с ключами остальных, если нет то заголовок не выводится 
            br = true;
    }
    if(br)
        document.write("<th></th>");
    else{
        document.write("<th></th>");
        $("th:nth-of-type(" + (i + 1) + ")").html(key[i]);
    }
}
document.write("</tr>");
    
for (var i = 0; i < persons.length; i++) {
    var key = Object.keys(persons[i]);
    
    if(!(i % 2))
        document.write("<tr style = 'background: #ccc;'>");
    else
        document.write("<tr>");
   
    for (var c = 0; c < key.length; c++) {
            document.write("<td></td>");
        	$("tr:nth-of-type("+ (i + 2) +") td:nth-of-type("+ (c + 1) +")").html(persons[i][key[c]]);
    }
    document.write("</tr>");
}
document.write("</table>");