问题
I'm using Chrome's version of localStorage (chrome.storage.sync) and I want to use a variable key and value when setting what data to store with it.
I'd like to be able to do something like this:
chrome.storage.sync.set({ user: id }, callback);
where the user and id are dynamically generated.
This:
var user = "Bob";
var id = "81256309";
chrome.storage.sync.set({ user: id }, callback);
doesn't work because it doesn't interpret user and id as their underlying string values and, as a result, syncs to Chrome with this object: { user: id }.
I know how to do this with normal JavaScript objects but the method in that thread won't work in this case because I don't have control over the storage.sync object of my Google account.
回答1:
See Computed property names in ES6, you could use
chrome.storage.sync.set({ [user]: id }, callback);
来源：https://stackoverflow.com/questions/38779855/how-to-set-variable-key-and-value-in-google-chrome-local-storage-sync