How to test service workers offline mode in localhost?

问题

How can I test service workers in offline mode locally? I mean, localhost doesn't need internet access so it just keeps fetching all the files. Can I simulate offline in Firefox or Chrome somehow so I can see what happens when caching fails, or other things go wrong?

回答1:

In Chrome, you can simulate being offline in the DevTools' Application tab, inside the Service Workers panel. You will see there a checkbox that says "Offline".

回答2:

Also, you could go to the Networks tab and perform the same action. Hope this helps :)

来源：https://stackoverflow.com/questions/43195485/how-to-test-service-workers-offline-mode-in-localhost