mdn / mdn/browser-compat-data

api.Navigator.sendBeacon - Chromium "Blob issue" was fixed in browsers based on Chromium 81+

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browser:chrome data:api
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Description

What type of issue is this?

Incorrect support data (example: Chrome says "86" but support was added in "40")

What information was incorrect, unhelpful, or incomplete?

There's are compatibility-remark on Chrome browser saying that Blob ain't supported from Chrome 39 and forward.
But this was fixed in Chrome 81:
https://bugs.chromium.org/p/chromium/issues/detail?id=724929
I assume it is also fixed in other Chromium based browsers.

I can also confirm it is working in Chrome 112.

What browsers does this problem apply to, if applicable?

Chromium (Chrome, Edge 79+, Opera, Samsung Internet)

What did you expect to see?

I was expecting a remark for Chrome 39-80 only (and equivalent for other Chromium based browsers)

Did you test this? If so, how?

I can also confirm it is working in Chrome 112 in an in-house (intranet) application.

From Chrome the following sends an object (sat) as JSON to url.href:

        const headers = {
            type: 'application/json'
        };
        const blob = new Blob([JSON.stringify(sat)], headers);
        const ok = navigator.sendBeacon(url.href, blob);

It is received in backend as expected.

Can you link to any release notes, bugs, pull requests, or MDN pages related to this?

https://bugs.chromium.org/p/chromium/issues/detail?id=724929

Do you have anything more you want to share?

No response

MDN URL

https://developer.mozilla.org/en-US/docs/Web/API/Beacon_API

MDN metadata
MDN page report details
  • Query: api.Navigator.sendBeacon
  • Report started: 2023-05-02T06:04:25.813Z

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the api.Navigator.sendBeacon compatibility-data entry and the linked Chromium issue; inspect the existing Blob remarks for Chrome, Edge, Opera, and Samsung Internet. Done means the remark is limited to the affected pre-Chromium-81 versions and the reported Chromium-based browser entries reflect the fix.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript
Domain
documentation
Issue type
Documentation
Difficulty
2/5
Estimated time
1-3 hours
Activity status
Stale
Clarity
Clearly specified
Newbie friendliness
45/100

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