NDEFReader.write()

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Secure context

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Experimental

This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The write() method of NDEFReader interface writes a specified message to a compatible NFC tag.

Syntax

var sessionPromise = NDEFReader.write(message, options);

Parameters

message

The message to be written, either DOMString or BufferSource or NDEFMessageInit.

options Optional

overwrite -- Boolean specifying whether or not existing record should be overwritten, if such exists.
signal -- optional AbortSignal that allows to cancel this write operation.

Return value

A Promise that resolves with undefined when and if the message transfer is successfully completed.

Exceptions

This method doesn't throw true exceptions; instead, it rejects the returned promise, passing into it a DOMException whose name is one of the following:

AbortError: The write operation was aborted with AbortSignal passed in options.
NotAllowedError: The permission for this operation was rejected or overwrite is false and there are already records on the tag.
NotSupportedError: There is no NFC adapter compatible with Web NFC, or the available NFC adapter does not support pushing messages, or connection can not be established.
NotReadableError: The UA is not allowed to access underlying NFC adapter (e.g., due to user preference).
NetworkError: Transfer failed after it already started (e.g., the tag was removed from the reader).

Specifications

Specification
Web NFC API # dom-ndefreader-write

Browser compatibility

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