Limited availability
å®å ¨ãªã³ã³ããã¹ãç¨: ãã®æ©è½ã¯ä¸é¨ã¾ãã¯ãã¹ã¦ã®å¯¾å¿ãã¦ãããã©ã¦ã¶ã¼ã«ããã¦ãå®å ¨ãªã³ã³ããã¹ã (HTTPS) ã§ã®ã¿å©ç¨ã§ãã¾ãã
Experimental: ããã¯å®é¨çãªæ©è½ã§ãã
æ¬çªã§ä½¿ç¨ããåã«ãã©ã¦ã¶ã¼äºææ§ä¸è¦§è¡¨ããã§ãã¯ãã¦ãã ããã
NDEFReader
ã¯ã¦ã§ã NFC APIã®ã¤ã³ã¿ã¼ãã§ã¤ã¹ã§ãäºææ§ã®ãã NFC æ©å¨ããã¨ãã° NDEF ã«å¯¾å¿ãã¦ãã NFC ã¿ã°ãªã©ããªã¼ãã¼ã®ç£æ°èªå°ç¯å²ã«ããã¨ãã«ããããã®æ©å¨ãããã¼ã¿ãèªã¿åã£ãããæ¸ãè¾¼ãã ãããããã«ä½¿ç¨ããã¾ãã
NDEFReader()
Experimental
æ°ãã NDEFReader
ãªãã¸ã§ã¯ãã§ãã
NDEFReader
ã¤ã³ã¿ã¼ãã§ã¤ã¹ã¯ã親ã¤ã³ã¿ã¼ãã§ã¤ã¹ã§ãã EventTarget
ããã¡ã½ãããç¶æ¿ãã¦ãã¾ãã
NDEFReader.scan()
Experimental
èªã¿åãæ©å¨ãã¢ã¯ãã£ãã«ã㦠Promise
ãè¿ãã¾ãããã®ãããã¹ã¯ NFC ã¿ã°ã®èªã¿åãæä½ãã¹ã±ã¸ã¥ã¼ã«ãããã¨ãã«è§£æ±ºãããã¼ãã¦ã§ã¢ã¾ãã¯æ¨©éã®ã¨ã©ã¼ãçºçããã¨ãã¯æå¦ããã¾ãããã®ã¡ã½ããã¯ã "nfc" ã®æ¨©éãäºåã«è¨±å¯ããã¦ããªãå ´åã¯ã許å¯ãåãåãããããã³ãããèµ·åãã¾ãã
NDEFReader.write()
Experimental
NDEF ã¡ãã»ã¼ã¸ãã¿ã°ã«æ¸ãè¾¼ãæä½ãè¡ãã Promise
ãè¿ãã¾ãããã®ãããã¹ã¯ãã¿ã°ã¸ã®ã¡ãã»ã¼ã¸ã®æ¸ãè¾¼ã¿ãå®äºããå ´åã¯è§£æ±ºãããã¼ãã¦ã§ã¢ã¾ãã¯æ¨©éã®ã¨ã©ã¼ãçºçããã¨ãã¯æå¦ããã¾ãããã®ã¡ã½ããã¯ã "nfc" ã®æ¨©éãäºåã«è¨±å¯ããã¦ããªãå ´åã¯ã許å¯ãåãåãããããã³ãããèµ·åãã¾ãã
親ã§ãã EventTarget
ããããããã£ãç¶æ¿ãã¦ãã¾ãã
reading
Experimental
äºææ§ã®ãã NFC æ©å¨ããèªã¿åããã§ããããã«ãªã£ãã¨ãã«çºè¡ããã¾ãã
readingerror
Experimental
ã¿ã°ãèªã¿åãè£ ç½®ã®è¿ãã«ããã«ãããããããèªã¿åããªãã£ãå ´åã«çºè¡ããã¾ãã
以ä¸ã®ä¾ã§ã¯ãä¸è¬çãªèªã¿åããã³ãã©ã¼ã¨ãåä¸ã®æ¸ãè¾¼ã¿ã«ç¹åãããã³ãã©ã¼ã®éã§èª¿æ´ããæ¹æ³ã示ãã¦ãã¾ããæ¸ãè¾¼ã¿ãè¡ãããã«ã¯ãã¿ã°ãçºè¦ããèªã¿åãå¿
è¦ãããã¾ããããã«ãããå®éã«æ¸ãè¾¼ã¿ããã¿ã°ã§ãããã©ããããã§ãã¯ãããã¨ãã§ãã¾ãããã®ãããèªã¿åãã¤ãã³ããã write()
ãå¼ã³åºããã¨ãæ¨å¥¨ããã¾ãã
const ndef = new NDEFReader();
let ignoreRead = false;
ndef.onreading = (event) => {
if (ignoreRead) {
return; // write pending, ignore read.
}
console.log("We read a tag, but not during pending write!");
};
function write(data) {
ignoreRead = true;
return new Promise((resolve, reject) => {
ndef.addEventListener(
"reading",
(event) => {
// Check if we want to write to this tag, or reject.
ndef
.write(data)
.then(resolve, reject)
.finally(() => (ignoreRead = false));
},
{ once: true },
);
});
}
await ndef.scan();
try {
await write("Hello World");
console.log("We wrote to a tag!");
} catch (err) {
console.error("Something went wrong", err);
}
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