Limited availability
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.
new NDEFReadingEvent(type, options)
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:
serialNumber Optional
The serial number of the device a message was read from. It default to "", and can be set to null.
message
An object with the following members:
data Optional
Contains the data to be transmitted. It can be a string, an ArrayBuffer, a TypedArray, a DataView, or an array of nested records.
encoding Optional
A string specifying the record's encoding.
id Optional
A developer-defined identifier for the record.
lang Optional
A valid language tag according to RFC 5646: Tags for Identifying Languages (also known as BCP 47).
mediaType Optional
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.
A new NDEFReadingEvent object.
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