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Last active February 6, 2020 07:10
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navigator.sendBeacon brain dump -- many not so great points
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sendBeacon.md

navigator.sendBeacon(url, data)

The data parameter is an ArrayBufferView, Blob, DOMString, or FormData object containing the data to be transmitted.

  • no plain old key-value JS object :| serialization of an object to a string up to the developer

  • always POST, not possible to send GET :|

  • when DOMString passed, the request type is Content-Type: text/plain, hence expressjs middlewares that read postdata won't process it :/ need to write custom middleware

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jakub-g commented Feb 6, 2020

https://volument.com/blog/sendbeacon-is-broken

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