function calcEval(n1,n2,act) {
    if (act == "^") {
        if (n1 == 0) {
            var result = "Недопустимое действие"
            return;
        }
        else
            var result = "Math.pow(" + n1 + "," + n2 + ");"
    }
    else
        if (act == "/" && n2 == 0)
            var result = "Недопустимое действие";
        else
            var result = n1 + act + n2;
    document.querySelector("#res2").innerHTML = eval(result);
}