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 message property of the NDEFReadingEvent interface returns an NDEFMessage object containing the received message.
An NDEFMessage object.
This example shows how to create a convenience function that reads a single tag and then stops polling, saving battery life by cutting unneeded work. The example could easily be extended to time out after a given amount of milliseconds.
const ndefReader = new NDEFReader();
function read() {
return new Promise((resolve, reject) => {
const controller = new AbortController();
controller.signal.onabort = reject;
ndefReader.addEventListener(
"reading",
(event) => {
controller.abort();
resolve(event);
},
{ once: true },
);
ndefReader.scan({ signal: controller.signal }).catch((err) => reject(err));
});
}
read().then(({ serialNumber }) => {
console.log(serialNumber);
});
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Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo
HTML:
3.2
| Encoding:
UTF-8
| Version:
0.7.4