MessagePort Examples are for the Window.postMessage() API

[majaha]

MDN URL

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

What specific section or headline is this issue about?

Example

What information was incorrect, unhelpful, or incomplete?

The examples seem to be for the Window.postMessage() method, rather than the similarly named MessagePort.postMessage() method.

What did you expect to see?

Examples that use the arguments you can give to MessagePort.postMessage(), i.e. without the targetOrigin "*".

It would be nice to have some examples of how to use transfer properly too, as it seems quite finicky. I think you need to both put it in the message, and put it in the transfer array.

Do you have any supporting links, references, or citations?

No response

Do you have anything more you want to share?

No response

MDN metadata

Page report details

• Folder: en-us/web/api/messageport/postmessage
• MDN URL: https://developer.mozilla.org/en-US/docs/Web/API/MessagePort/postMessage
• GitHub URL: https://github.com/mdn/content/blob/main/files/en-us/web/api/messageport/postmessage/index.md
• Last commit: e0310b3
• Document last modified: 2024-07-21T19:56:00.000Z