Returns true when "obj" (Object) has all the properties "kv" (Object) has, and with exactly the same values, otherwise, false
function hasPropsAndVals(obj, kv) {
    if (typeof (obj) !== 'object' || typeof (kv) !== 'object') {
        return (false);
    }

    if (Object.keys(kv).length === 0) {
        return (true);
    }

    return (Object.keys(kv).every(function (k) {
        return (obj[k] && obj[k] === kv[k]);
    }));
}