Node-red json parsing

[rnevi]

Hello,
I am new to node-red and i have a Json file with multiple arrays:

and i want to iterate them all in a nested loop so i can save the values inside a list.
so far i managed to iterate one array and save the values to a list but i cannot go through multiple arrays for some reason
This is what i have so far:

for (var i=0; i<=data.features[0].geometry.coordinates.length; i++){
    for (var j=0; j<=data.features[0].geometry.coordinates[i].length; j++)
        spots.push(data.features[0].geometry.coordinates[i][j]);
}

and i get the following error:

TypeError: Cannot read property 'length' of undefined

[Steve-Mcl]

@rnevi

<=

Change the <= to < in the for loops.

You are going past the end of the array.

[rnevi]

That worked! Thank you very much!

[TotallyInformation]

For future reference, there are much easier ways to iterate an array.

msg.payload.features.forEach( feature => {
  feature.geometry.coordinates.forEach( coord => {
    // .... and so on ....
  })
})