javascript - How to clear chrome.storage.local and chrome.storage.sync?

Question

I've written a Chrome Extension for my library. It uses chrome.storage.local to cache things.

Does anyone know how to drop the cache for testing purposes? I can't really test things anymore as all the data is now in cache. I'd like to drop it and make sure it gets repopulated correctly, etc. How do I do that?

I tried "Refresh"-ing the extension but that did nothing. Removing and adding the extension doesn't appear to clean cache either.

Answer 1

Use chrome.storage.local.clear() and chrome.storage.sync.clear()

The API is asynchronous so to do subsequent actions to the storage, use a callback:

chrome.storage.local.clear(function() {
    var error = chrome.runtime.lastError;
    if (error) {
        console.error(error);
    }
    // do something more
});
chrome.storage.sync.clear(); // callback is optional