javascript - chrome.storage.local["mykey"] is undefined

Question

I am making a Chrome extension where I will store the password from the user in local storage. I am storing it in popup.js using

chrome.storage.local["mykey"] = "xxx";

When I use chrome.storage.local["mykey"], I'm getting undefined. Can you tell me how to store and retrieve user data in a Chrome extension?

Answer 1

根据chrome.storageAPI，存储值的正确方法是.set：

chrome.storage.local.set({"mykey": someData}, optionalCompletionCallback);

稍后要访问该值，请.get与接受数据的回调一起使用：

chrome.storage.local.get("mykey", function(fetchedData) {
    alert("fetched: " + fetchedData.mykey);
});