How do I loop through deeply nested properties of a JavaScript object?

Question

I have a JavaScript object with 3 levels of nesting. I am having a hard time getting the values from the 3rd level of nesting.

I have done some research on SO and ge

Answer 1

You have an object (customers) with an array stored at cluster, which you can iterate through with

var i, cluster;
for (i = 0; i < customers.cluster.length; i++)
{
  cluster = customers.cluster[i];
}

cluster has an array stored at segment which you can iterate through with:

var j, segment;
for (j = 0; j < cluster.segment.length; j++)
{
  segment = cluster.segment[j];
}

segment has an array stored at node which you can iterate through with:

var k, node;
for (k = 0; k < segment.node.length; k++)
{
  node = segment.node[k];
}

You can combine all of these to iterate through every node of every segment of every cluster on customers just by combining these loops:

var i, cluster, j, segment, k, node;
for (i = 0; i < customers.cluster.length; i++)
{
  cluster = customers.cluster[i];

  for (j = 0; j < cluster.segment.length; j++)
  {
    segment = cluster.segment[j];

    for (k = 0; k < segment.node.length; k++)
    {
      node = segment.node[k];
      //access node.xpos, node.ypos here
    }
  }
}