Baseline Widely available
postMessage()
㯠Client
ã¤ã³ã¿ã¼ãã§ã¤ã¹ã®ã¡ã½ããã§ããµã¼ãã¹ã¯ã¼ã«ã¼ãã¯ã©ã¤ã¢ã³ã (Window
, Worker
, SharedWorker
) ã«ã¡ãã»ã¼ã¸ãéä¿¡ãããã¨ãã§ãã¾ããã¡ãã»ã¼ã¸ã¯ãnavigator.serviceWorker
ã® "message
" ã¤ãã³ãã§åä¿¡ããã¾ãã
postMessage(message)
postMessage(message, transferables)
弿°
message
ã¯ã©ã¤ã¢ã³ãã«éä¿¡ããã¡ãã»ã¼ã¸ã§ããããã¯ãä»»æã®æ§é åè¤è£½å¯è½åã«ãããã¨ãã§ãã¾ãã
transfer
çç¥å¯
ã¡ãã»ã¼ã¸ã¨ã¨ãã«è»¢éããããªãã¸ã§ã¯ãã®ã·ã¼ã±ã³ã¹ã§ãã ãããã®ãªãã¸ã§ã¯ãã®æææ¨©ã¯å®å å´ã«ä¸ããããéä¿¡å´ã§ã¯ä½¿ç¨ã§ããªããªãã¾ãã
ãªã (undefined
)ã
ãµã¼ãã¹ã¯ã¼ã«ã¼ããã¯ã©ã¤ã¢ã³ãã¸ã®ã¡ãã»ã¼ã¸ã®éä¿¡
addEventListener("fetch", (event) => {
event.waitUntil(
(async () => {
// ã¯ã©ã¤ã¢ã³ãã«ã¢ã¯ã»ã¹ã§ããªãå ´åã¯ãæ©æã«çµäºãã¾ãã
// ä¾ãã°ãã¯ãã¹ãªãªã¸ã³ã®å ´åã
if (!event.clientId) return;
// ã¯ã©ã¤ã¢ã³ããåå¾ãã¾ãã
const client = await clients.get(event.clientId);
// ã¯ã©ã¤ã¢ã³ããåå¾ã§ããªãå ´åã¯ãæ©æã«çµäºãã¾ãã
// ä¾ãã°ãéãã¦ããå ´åã
if (!client) return;
// ã¯ã©ã¤ã¢ã³ãã«ã¡ãã»ã¼ã¸ãéä¿¡ãã¾ãã
client.postMessage({
msg: "ç§ã¯ããªããããã§ããããã¾ãããï¼",
url: event.request.url,
});
})(),
);
});
ãã®ã¡ãã»ã¼ã¸ã®åãåã
navigator.serviceWorker.addEventListener("message", (event) => {
console.log(event.data.msg, event.data.url);
});
仿§æ¸ ãã©ã¦ã¶ã¼ã®äºææ§
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