Trying to Get state name about nodejs-geoip2ws HOT 10 CLOSED

I found a work around, it looks like you added [] for some reason.
data.subdivisions[0].names.en

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What does console.log (data.subdivisions) give you?
My code does not alter the API response, it is provided exactly as received.

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I listed the outputs above. Output is this.

[object Object]

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Subdivisions is an array. There can be multiple levels of ISO subdivisions for some countries.

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Indeed, subdivisions is an array or not available (undefined). When it is available the last element is usually the state, depending on region.

function getState (data) {
  return Array.isArray (data.subdivisions) && data.subdivisions.pop().names.en || null;
}

insights ('129.67.242.154', function (err, data) {
  if (err) { return console.log (err); }
  console.log ('State: %s', getState (data));
});

(edit: shorter code)

from nodejs-geoip2ws.

In many countries, such as the US, there is only one subdivision level, corresponding to states. However, some countries such as the United Kingdom have multiple levels, e.g., [0] England, [1] Oxfordshire. The subdivisions are always largest to smallest.

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That makes using this kinda messy. If statements could be endless with this logic. I didn't notice the documentation stating this. Is there a more descriptive rundown on this somewhere?

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Not that I know of. I'm affraid there is no easier solution as each region has their own system.

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The MaxMind GeoIP2 JavaScript API adds in an empty array if it doesn't exist as well as adding a most_specific_subdivision property that returns the last element in the array. Maybe something similar could be done with this API.

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Alright, it's on npm :)
Thanks for the hint @oschwald

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