Store an array with chrome.storage.local

Question

I\'m writing a chrome extension, and I can\'t store an array. I read that I should use JSON stringify/parse to achieve this, but I have an error using it.

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Answer 1

I think you've mistaken localStorage for the new Chrome Storage API.
- You needed JSON strings in case of the localStorage
- You can store objects/arrays directly with the new Storage API

// by passing an object you can define default values e.g.: []
chrome.storage.local.get({userKeyIds: []}, function (result) {
    // the input argument is ALWAYS an object containing the queried keys
    // so we select the key we need
    var userKeyIds = result.userKeyIds;
    userKeyIds.push({keyPairId: keyPairId, HasBeenUploadedYet: false});
    // set the new array value to the same key
    chrome.storage.local.set({userKeyIds: userKeyIds}, function () {
        // you can use strings instead of objects
        // if you don't  want to define default values
        chrome.storage.local.get('userKeyIds', function (result) {
            console.log(result.userKeyIds)
        });
    });
});