Javascript get value of array index within an array

Question

My array looks like this:

var array = [
  ['fred', 123, 424],
  ['johnny', 111, 222]
]

etc...

I simply would like to select the second value in the first array (123, i.e. the value in the "fred" array) like so:

array[0][1];

But it's returning undefined. When I do console.log(array), I get the following:

Array[1], Array[1], Array[1], Array[1]]
  0: Array[3]
    0: "fred"
    1: 123
    2: 424

etc...

How do I get the value of that second item using the syntax described above?

Thanks!

Here is the full code:

var addresses = [
    ['Bondi Beach Australia'],
    ['Coogee Beach Australia'],
    ['Cronulla Beach Australia'],
    ['Manly Beach Australia']
];

for (i = 0; i < addresses.length; i++) {
    (function(address){

        geocoder.geocode( { 'address': addresses[i][0]}, function(results, status) {
            if (status == google.maps.GeocoderStatus.OK) {
                address.push(results[0].geometry.location.lb);
                address.push(results[0].geometry.location.mb);
            } else {
                alert("Geocode was not successful for the following reason: " + status);
            }
        });

    })(addresses[i]);
}

console.log(addresses[0][1]); // Returns 'undefined'

Answer 1

Your problem is that geocode is an asynchronous function and you log before it finishes.

As you launch your queries in a loop, you probably want to wait for all of them to finish before you do the other operations (among them your log).

Here's a solution :

var n = addresses.length;
function check() {
   if (--n===0) {
      // everything's finished
      console.log(addresses[0][1]);
   }
}
for (i = 0; i < addresses.length; i++) {
    (function(address){
        geocoder.geocode( { 'address': addresses[i][0]}, function(results, status) {
            if (status == google.maps.GeocoderStatus.OK) {
                address.push(results[0].geometry.location.lb);
                address.push(results[0].geometry.location.mb);
            } else {
                alert("Geocode was not successful for the following reason: " + status);
            }
            check();
        });
    })(addresses[i]);
}