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The FilenameConflictAction type of the downloads API specifies what to do if the name of a downloaded file conflicts with an existing file.
This type defines the values that can be used for the conflictAction property of the downloads.download function's options parameter.
Type
Values of this type are strings. Possible values are:
"uniquify"- The browser will modify the filename to make it unique.
"overwrite"- The browser will overwrite the old file with the newly-downloaded file.
"prompt"- The browser will prompt the user, asking them to choose whether to uniquify or overwrite.
Browser compatibility
The compatibility table in 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.
| Chrome | Edge | Firefox | Firefox for Android | Opera | |
|---|---|---|---|---|---|
| Basic Support | Yes | No | 47.0 | 48.0 | 33 |
Compatibility notes
Firefox
- 'prompt' is not supported.
Firefox for Android
- 'prompt' is not supported.
This API is based on Chromium's chrome.downloads API.
Microsoft Edge compatibility data is supplied by Microsoft Corporation and is included here under the Creative Commons Attribution 3.0 United States License.
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