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NDEFReadingEvent.message

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The message property of the NDEFReadingEvent interface returns an NDEFMessage object containing the received message.

Value

An NDEFMessage object.

Examples

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 ctlr = new AbortController();
      ctlr.signal.onabort = reject;
      ndefReader.addEventListener("reading", event => {
        ctlr.abort();
        resolve(event);
      }, { once: true });
      ndefReader.scan({ signal: ctlr.signal }).catch(err => reject(err));
    });
  }

  read().then(({ serialNumber }) => {
    console.log(serialNumber);
  });

Specifications

No specification found

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Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
message
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15.0

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https://developer.mozilla.org/en-US/docs/Web/API/NDEFReadingEvent/message