Baseline Widely available
ReadableStreamDefaultController
ã¯ã¹ããªã¼ã API ã®ã¤ã³ã¿ã¼ãã§ã¤ã¹ã§ãReadableStream
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ãªãã ReadableStreamDefaultController
ã¤ã³ã¹ã¿ã³ã¹ã¯ãReadableStream
ã®æ§ç¯ä¸ã«èªåçã«ä½æããã¾ãã
ReadableStreamDefaultController.desiredSize
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ã¹ããªã¼ã ã®å é¨ãã¥ã¼ãæºããããã«å¿ è¦ãªå¸æãµã¤ãºãè¿ãã¾ãã
ReadableStreamDefaultController.close()
é¢é£ããã¹ããªã¼ã ãéãã¾ãã
ReadableStreamDefaultController.enqueue()
æä¸ã®ãã£ã³ã¯ãé¢é£ããã¹ããªã¼ã ã®ãã¥ã¼ã«å ¥ãã¾ãã
ReadableStreamDefaultController.error()
é¢é£ããã¹ããªã¼ã ã¨ã®ä»å¾ã®ããåãã§ã¨ã©ã¼ãçºçããã¾ãã
次ã®åç´ãªä¾ã§ã¯ãã³ã³ã¹ãã©ã¯ã¿ã¼ã使ç¨ãã¦ã«ã¹ã¿ã ã® ReadableStream
ã使ãã¾ãï¼å®å
¨ãªã³ã¼ãã«ã¤ãã¦ã¯ãåç´ãªã©ã³ãã ã¹ããªã¼ã ã®ä¾ãåç
§ï¼ã start()
颿°ã¯ã1 ç§ãã¨ã«ããã¹ãã®ã©ã³ãã ãªæååãçæãããããã¹ããªã¼ã ã®ãã¥ã¼ã«å
¥ãã¾ãã ReadableStream.cancel()
ãä½ããã®çç±ã§å¼ã³åºãããå ´åãçæã忢ããããã® cancel()
颿°ãæä¾ãã¾ãã
ReadableStreamDefaultController
ãªãã¸ã§ã¯ãã¯ã start()
颿°ããã³ pull()
颿°ã®å¼æ°ã¨ãã¦æä¾ããããã¨ã«æ³¨æãã¦ãã ããã
ãã¿ã³ãæ¼ãããã¨ãçæã忢ãã ReadableStreamDefaultController.close()
ã使ç¨ãã¦ã¹ããªã¼ã ãéããã¹ããªã¼ã ãããã¼ã¿ãèªã¿åãå¥ã®é¢æ°ãå®è¡ãã¾ãã
let interval;
const stream = new ReadableStream({
start(controller) {
interval = setInterval(() => {
let string = randomChars();
// ã¹ããªã¼ã ã«æååã追å
controller.enqueue(string);
// ãããç»é¢ã«è¡¨ç¤º
let listItem = document.createElement("li");
listItem.textContent = string;
list1.appendChild(listItem);
}, 1000);
button.addEventListener("click", () => {
clearInterval(interval);
fetchStream();
controller.close();
});
},
pull(controller) {
// ãã®ä¾ã§ã¯å®éã«ã¯ pull ã¯å¿
è¦ããã¾ãã
},
cancel() {
// ãªã¼ãã¼ããã£ã³ã»ã«ãããå ´åã«å¼ã³åºãããããã
// æååã®çæã忢ããå¿
è¦ãããã¾ã
clearInterval(interval);
},
});
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