DownloadItem type of the
downloads API represents a downloaded file.
Values of this type are objects. They contain the following properties:
stringrepresenting the ID of the extension that triggered the download (if it was triggered by an extension). This does not change once set. If the download was not triggered by an extension this is undefined.
stringrepresenting the name of the extension that triggered the download (if it was triggered by an extension). This may change if the extension changes its name or the user changes their locale. If the download was not triggered by an extension this is undefined.
numberrepresenting the number of bytes received so far from the host during the download; this does not take file compression into consideration.
booleanindicating whether a currently-interrupted (e.g. paused) download can be resumed from the point where it was interrupted (
true), or not (
- A string indicating whether this download is thought to be safe or known to be suspicious. Its possible values are defined in the
string(in ISO 8601 format) representing the number of milliseconds between the UNIX epoch and when this download ended. This is undefined if the download has not yet finished.
- A string indicating why a download was interrupted. Possible values are defined in the
downloads.InterruptReasontype. This is undefined if an error has not occurred.
string(in ISO 8601 format) representing the estimated number of milliseconds between the UNIX epoch and when this download is estimated to be completed. This is undefined if it is not known (in particular, it is undefined in the
DownloadItemthat's passed into
booleanindicating whether a downloaded file still exists (
true) or not (
false). This information might be out-of-date, as browsers do not automatically watch for file removal — to check whether a file exists, call the
downloads.search()method, filtering for the file in question.
stringrepresenting the file's absolute local path.
numberindicating the total number of bytes in the whole file, after decompression. A value of -1 here means that the total file size is unknown.
integerrepresenting a unique identifier for the downloaded file that is persistent across browser sessions.
booleanthat indicates whether the download is recorded in the browser's history (
false), or not (
stringrepresenting the downloaded file's MIME type.
booleanindicating whether the download is paused, i.e. if the download has stopped reading data from the host but has kept the connection open. If so, the value is
stringrepresenting the downloaded file's referrer.
string(in ISO 8601 format) representing the number of milliseconds between the UNIX epoch and when this download began.
stringIndicating whether the download is progressing, interrupted, or complete. Possible values are defined in the
numberindicating the total number of bytes in the file being downloaded. This does not take file compression into consideration. A value of -1 here means that the total number of bytes is unknown.
stringrepresenting the absolute URL from which the file was downloaded.
BCD tables only load in the browser
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.
This API is based on Chromium's
Microsoft Edge compatibility data is supplied by Microsoft Corporation and is included here under the Creative Commons Attribution 3.0 United States License.