NDEFRecord: data property
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 data
property of the NDEFRecord
interface returns a
DataView
containing the raw bytes of the record's payload.
Syntax
js
NDEFRecord.data
Value
A DataView
that contains encoded payload data of the record.
Examples
The following example loops over the records in an NDEFMessage
object, which is retrieved from NDEFReadingEvent.message
. After
selecting a record based on its mediaType
, it then decodes what's stored in the data
property.
js
const ndef = new NDEFReader();
await ndef.scan();
ndef.onreading = (event) => {
const decoder = new TextDecoder();
for (const record of event.message.records) {
if (record.mediaType === "application/json") {
const json = JSON.parse(decoder.decode(record.data));
const article = /^[aeio]/i.test(json.title) ? "an" : "a";
console.log(`${json.name} is ${article} ${json.title}`);
}
}
};
Specifications
Specification |
---|
Web NFC API # dom-ndefrecord-data |
Browser compatibility
BCD tables only load in the browser