open()
function of the
downloads
API opens the downloaded file with its associated application. A
downloads.onChanged
event will fire when the item is opened for the first time.
To use this function in your extension you must ask for the "downloads.open" manifest permission , as well as the "downloads" permission. Also, you can only call this function from inside the handler for a user action .
This is an asynchronous function that returns a
Promise
.
var opening = browser.downloads.open(
downloadId
// integer
)
downloadId
An
integer
表示
id
的
downloads.DownloadItem
you want to open.
A
Promise
. If the request was successful, the promise will be fulfilled with no arguments. If the request failed, the promise will be rejected with an error message.
BCD tables only load in the browser
This example opens the most recently downloaded item:
function onOpened() {
console.log(`Opened download item`);
}
function onError(error) {
console.log(`Error opening item: ${error}`);
}
function openDownload(downloadItems) {
if (downloadItems.length > 0) {
var opening = browser.downloads.open(downloadItems[0].id);
opening.then(onOpened, onError);
}
}
var searching = browser.downloads.search({
limit: 1,
orderBy: ["-startTime"]
});
searching.then(openDownload, onError);
注意：
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.
最后修改： , 由 MDN 贡献者