When sending an array from client to server, how can I access each array index in the server? (javascript)

Question

I am sending an array to my server using ajax

$.ajax({
            url: "/sendToDb",
            type: "POST",
            data: {myArray: top200}
        });

I can log out the array using req.body in my Post.

app.post('/sendToDb', urlencodedParser, function(req, res){

  console.log(req.body);

});

Using req.body, how can I log out an individual index of the array in my server? (Go easy on me. I'm a fairly new coder).