Opens print preview for the active tab.
This is an asynchronous function that returns a
Promise
.An extension can detect when print preview has been closed by listening to the
afterprint
event:
window.addEventListener("afterprint", resumeFunction, false);
var openingPreview = browser.tabs.printPreview()
None.
A
Promise
that will be fulfilled with no arguments when the preview page has opened.
In this example a background script listens for a click on a browser action , then opens print preview for the currently active tab:
browser.browserAction.onClicked.addListener(() => {
browser.tabs.printPreview()
.then(() => {
console.log("Entered print preview");
});
});
BCD tables only load in the browser
最后修改： , 由 MDN 贡献者