问题
Because it isn't possible to use Greasemonkey for this, I want to write a Chrome extension that will reload a page if it initially failed to load.
I know how to write a Chrome extension, I've already injected scripts and figured out how to communicate with pages, so I have basic knowledge of how tabs work and how to build my manifest.
What events am I looking for and how can I make it work for both GET and POST requests?
回答1:
Use chrome.webNavigation.onErrorOccurred or chrome.webRequest.onErrorOccurred to detect navigation errors. These APIs cannot be used in a content script, so you have to add a background page or event page to your extension.
I recommend to use the webNavigation API because these can also be used with event pages (unlike the webRequest API). Here is an example, use chrome.tabs.reload instead of chrome.tabs.update to get what you want.
来源：https://stackoverflow.com/questions/23724668/chrome-extension-to-reload-page-on-load-error