This is an experimental technologyCheck the Browser compatibility table carefully before using this in production.
The FileSystemEntry
interface's method getParent
()
obtains a FileSystemDirectoryEntry
.
Syntax
FileSystemEntry.getParent(successCallback[, errorCallback]);
Parameters
successCallback
- A function which is called when the parent directory entry has been retrieved. The callback receives a single input parameter: a
FileSystemDirectoryEntry
object representing the parent directory. The parent of the root directory is considered to be the root directory, itself, so be sure to watch for that. errorCallback
Optional- An optional callback which is executed if an error occurs. There's a single parameter: a
FileError
describing what went wrong.
Return value
Errors
FileError.INVALID_STATE_ERR
- The operation failed because the file system's state doesn't permit it. This can happen, for example, if the file system's cached state differs from the actual state of the file system.
FileError.NOT_FOUND_ERR
- The specified path could not be found.
FileError.SECURITY_ERR
- Security restrictions prohibit obtaining the parent directory's information.
Example
This example renames the file specified by the variable fileEntry
to "newname.html"
.
fileEntry.getParent(function(parent) {
fileEntry.moveTo(parent, "newname.html", function(updatedEntry) {
console.log("File " + fileEntry.name + " renamed to newname.html.");
});
}, function(error) {
console.error("An error occurred: Unable to rename " + fileEntry.name
+ " to newname.html.");
});
This is accomplished by first obtaining a FileSystemDirectoryEntry
object representing the directory the file is currently located in. Then moveTo()
is used to rename the file within that directory.
Using promises
Currently, there isn't a Promise
-based version of this method. You can, however, create a simple helper function to adapt it, like this:
function getParentPromise(entry) {
return new Promise((resolve, reject) => {
entry.getParent(resolve, reject);
});
}
A similar approach can be taken elsewhere in the File and Directory Entries API.
Specifications
Specification | Status | Comment |
---|---|---|
File and Directory Entries APIThe definition of 'getParent()' in that specification. | Draft | Initial specification. |
Browser compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Update compatibility data on GitHub
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Chrome
Full support 8 |
Edge
Full support 79 |
Firefox
No support No |
IE
No support No |
Opera
No support No |
Safari
Full support 11.1 |
WebView Android
Full support ≤37 |
Chrome Android
Full support 18 |
Firefox Android
No support No |
Opera Android
No support No |
Safari iOS
Full support 11.3 |
Samsung Internet Android
Full support 1.0 |
Legend
- Full support
- Full support
- No support
- No support
- Experimental. Expect behavior to change in the future.'
- Experimental. Expect behavior to change in the future.
See also
FileSystemEntry.getParent() by Mozilla Contributors is licensed under CC-BY-SA 2.5.