Cloudflare geolocates your visitors and add their country code to your header. If you only have client side access you cannot access this header value but you can query the /cdn-cgi/trace and grab the visitors country code. This code snippet is using the m.request API which is apart of the Mithril.js framework Core API but this will also work with a basic vanilla XHR request.
Last active
November 19, 2018 05:52
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Cloudflare Client Side GeoIP
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| const geoip = { | |
| code: null, | |
| getCode: () => m.request({ | |
| url: 'https://flems.io/cdn-cgi/trace', | |
| deserialize: data => data.split('\n') | |
| }).then((data) => { | |
| const value = data.map((line) => line.split('=')) | |
| const code = value.filter((line) => line[0] === 'loc') | |
| geoip.code = code[0][1] !== 'XX' && code[0][1] | |
| }) | |
| } | |
| /* Log */ | |
| console.log(geoip.code) |
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