11_nestedArrays.js

// Nested Arrays

const numberClusters = [
  [1,2],[3,4],[5,6]
];

const target = numberClusters[2][1];
console.log(target);



/*
Arrays can store other arrays. When an array contains another array it is known as a nested array. Examine the example below:

const nestedArr = [[1], [2, 3]];

To access the nested arrays we can use bracket notation with the index value:

console.log(nestedArr[1]); // Output: [2, 3]

nestedArr[1] will grab the element in index 1 which is the array [2, 3]. 
Then, if we wanted to access the elements within the nested array we can chain, or add on, more bracket notation with index values.

console.log(nestedArr[1]); // Output: [2, 3]
console.log(nestedArr[1][0]); // Output: 2

In the second console.log() statement, we have two bracket notations chained to nestedArr. We know that nestedArr[1] is the array [2, 3]. 
Then to grab the first element from that array, we use nestedArr[1][0] and we get the value of 2.
*/