Need workaround for calling alert() from background script

问题

Calling alert() from the background script is allowed in Google's Chrome, but not in Firefox (WebExtensions) which I am porting my Chrome extension to.

So, I need a workaround to get an alert dialog up. I'm not asking for anything else other than THE alert dialog.

Sending a message to a content script to call alert() will not suffice since no content scripts may be loaded at the time the alert call is needed.

回答1:

My workaround is to save the alert code in a string like:

var alertWindow = 'alert(message)';

and let the background script inject that code like:

browser.tabs.executeScript({code : alertWindow});

来源：https://stackoverflow.com/questions/38950281/need-workaround-for-calling-alert-from-background-script