Baseline Widely available
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message
ã¤ãã³ã㯠Worker
ãªãã¸ã§ã¯ãã§ãã¯ã¼ã«ã¼ã®è¦ªãã¯ã¼ã«ã¼ããã¡ãã»ã¼ã¸ãåãåã£ãã¨ãï¼ããªãã¡ãã¯ã¼ã«ã¼ã DedicatedWorkerGlobalScope.postMessage()
ãç¨ãã¦ã¡ãã»ã¼ã¸ãéä¿¡ããã¨ãï¼ã«çºçãã¾ãã
ãã®ã¤ãã³ãã¯ãã£ã³ã»ã«ä¸å¯ã§ããããªã³ã°ãã¾ããã
æ§æãã®ã¤ãã³ãåã addEventListener()
ãªã©ã®ã¡ã½ããã§ä½¿ç¨ããããã¤ãã³ããã³ãã©ã¼ããããã£ãè¨å®ããããã¦ãã ããã
addEventListener("message", (event) => { })
onmessage = (event) => { }
ã¤ãã³ãå
MessageEvent
ã§ãã Event
ãç¶æ¿ãã¦ãã¾ãã
ãã®ã¤ã³ã¿ã¼ãã§ã¤ã¹ã«ã¯ã親ã§ãã Event
ããç¶æ¿ããããããã£ãããã¾ãã
MessageEvent.data
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MessageEvent.origin
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æååã§ãã¡ãã»ã¼ã¸éä¿¡è ã®ãªãªã¸ã³ã表ãã¾ãã
MessageEvent.lastEventId
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æååã§ããã®ã¤ãã³ãã®åºæã® ID ã表ãã¾ãã
MessageEvent.source
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MessageEventSource
ï¼WindowProxy, MessagePort
, ServiceWorker
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ã表ãã¾ãã
MessageEvent.ports
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MessagePort
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ãã®ã³ã¼ãã§ã¯ãæ°ããã¯ã¼ã«ã¼ãçæãã¦ã addEventListener()
ãç¨ãã¦ã¡ãã»ã¼ã¸ãå¾
ã¡åããã¾ãã
const worker = new Worker("static/scripts/worker.js");
worker.addEventListener("message", (event) => {
console.log(`Received message from worker: ${event.data}`);
});
ä»ã«ãã onmessage
ã¤ãã³ããã³ãã©ã¼ããããã£ã使ç¨ãã¦å¾
ã¡åããããã¨ãã§ãã¾ãã
const worker = new Worker("static/scripts/worker.js");
worker.onmessage = (event) => {
console.log(`Received message from worker: ${event.data}`);
};
ã¯ã¼ã«ã¼ã¯ self.postMessage()
ã使ç¨ãã¦ã¡ãã»ã¼ã¸ãéä¿¡ãã¾ãã
// static/scripts/worker.js
self.postMessage("I'm alive!");
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