MozNDEFRecord.tnf

The tnf property of the MozNDEFRecord interface contains the Type Name Format (3-bit field) of the record. This field is required.

Possible tnf values are:

• tnf_empty: 0x0
• tnf_well_known: 0x1
• tnf_mime_media: 0x2
• tnf_absolute_uri: 0x3
• tnf_external_type: 0x4
• tnf_unknown: 0x5
• tnf_unchanged: 0x6
• tnf_reserved: 0x7

Syntax

readonly attribute octet tnf;

Example

var tnf     = 0x1;                                                    // NFC Forum Well Known type
var type    = new Uint8Array(NfcUtils.fromUTF8("U"));                 // URL type
var id      = new Uint8Array(NfcUtils.fromUTF8(""));                  // id
var payload = new Uint8Array(NfcUtils.fromUTF8("\u0003mozilla.org")); // URL data, with a short record prefix 0x3 replacing http://
var ndefRecords = [new MozNDEFRecord(tnf, type, id, payload)];

Value

An octet.

Specifications

The NFC implementation in Gecko follows the NFC Forum specifications.

Browser compatibility

[1] Available in privileged apps as of Firefox OS 2.2; certified-only before that.

See also

• Using the NFC API
• Using the NFC emulator
• NFC Forum Data Exchange Format Technical Specification
• Draft W3C NDEF-related formats