NDEFReadingEvent: NDEFReadingEvent() constructor
Limited availability
This feature is not Baseline because it does not work in some of the most widely-used browsers.
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The NDEFReadingEvent() constructor creates a new NDEFReadingEvent object which represents events dispatched on new NFC readings obtained by NDEFReader.
Syntax
new NDEFReadingEvent(type, options)
Parameters
type-
A string with the name of the event. It is case-sensitive and browsers always set it to
reading. options-
An object that, in addition of the properties defined in
Event(), can have the following properties:serialNumberOptional-
The serial number of the device a message was read from. It default to
"", and can be set tonull. message-
An object with the following members:
dataOptional-
Contains the data to be transmitted. It can be a string, an
ArrayBuffer, aTypedArray, aDataView, or an array of nested records. encodingOptional-
A string specifying the record's encoding.
idOptional-
A developer-defined identifier for the record.
langOptional-
A valid BCP 47 language tag.
mediaTypeOptional-
A valid MIME type.
recordType-
A string indicating the type of data stored in
data. It must be one of the following values:"absolute-url"-
An absolute URL to the data.
"empty"-
An empty
NDEFRecord. "mime"-
A valid MIME type.
"smart-poster"-
A smart poster as defined by the NDEF-SMARTPOSTER specification.
"text"-
Text as defined by the NDEF-TEXT specification.
"unknown"-
The record type is not known.
"URL"-
A URL as defined by the NDEF-URI specification.
Return value
A new NDEFReadingEvent object.
Specifications
| Specification |
|---|
| Web NFC # dom-ndefreadingevent-constructor |
Browser compatibility
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