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FileSystemDirectoryHandle: keys() method - Web APIs | MDN
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FileSystemDirectoryHandle: keys() method
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since March 2023.
Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.
Note: This feature is available in Web Workers.
The keys() method of the
FileSystemDirectoryHandle interface returns a new asynchronous iterator
for the iteration of the key of the entries within the FileSystemDirectoryHandle
on which this method is called.
Syntax
js
keys()
Parameters
None.
Return value
A new asynchronous iterator containing the keys of each entry within the FileSystemDirectoryHandle.
Exceptions
NotAllowedErrorDOMException-
Thrown if the
PermissionStatus.statefor the handle is not'granted'inreadmode. NotFoundErrorDOMException-
Thrown if the current entry is not found.
Examples
Use the for await...of loop can simplify the iteration process.
js
const dirHandle = await window.showDirectoryPicker();
for await (const key of dirHandle.keys()) {
console.log(key);
}
Specifications
| Specification |
|---|
| File System # api-filesystemdirectoryhandle-asynciterable |
Browser compatibility
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