Baseline 2023
Newly available
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FileSystemSyncAccessHandle
ã¤ã³ã¿ã¼ãã§ã¤ã¹ã® truncate()
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newSize
ãã¡ã¤ã«ã®ãªãµã¤ãºå¾ã®ãã¤ãæ°ã§ãã
undefined
ã§è§£æ±ºãã Promise
ãè¿ãã¾ãã
InvalidStateError
DOMException
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QuotaExceededError
DOMException
newSize
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async function truncateFile() {
// draft ãã¡ã¤ã«ã®ãã³ãã«ãåå¾ãã
const root = await navigator.storage.getDirectory();
const draftHandle = await root.getFileHandle("draft.txt", { create: true });
// åæå¼ã¢ã¯ã»ã¹ãã³ãã«ãåå¾ãã
const accessHandle = await draftHandle.createSyncAccessHandle();
// ãã¡ã¤ã«ã 0 ãã¤ãã«åãè©°ãã
accessHandle.truncate(0);
// 夿´ããã£ã¹ã¯ã«æ¸ãè¾¼ã
accessHandle.flush();
// å®äºãããã常㫠FileSystemSyncAccessHandle ãéãã
accessHandle.close();
}
ã¡ã¢: 仿§æ¸ã®ä»¥åã®ãã¼ã¸ã§ã³ã§ã¯ãclose()
ã»flush()
ã»getSize()
ã»truncate()
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