Solution I

Question

81

saving and retrieving from chrome.storage.sync

rated 0 times [ 88] [ 7] / answers: 1 / hits: 87508 / 12 Years ago, fri, january 25, 2013, 12:00:00

I am trying to save a data object in chrome sync storage and then retrieve it, however the get() function always returns an empty object. The code I am using is,

function storeUserPrefs() {

    var key='myKey', testPrefs = {'val': 10};

        chrome.storage.sync.set({key: testPrefs}, function() {console.log('Saved', key, testPrefs);});

}



function getUserPrefs() {

    chrome.storage.sync.get('myKey', function (obj) {

        console.log('myKey', obj);

    });

}

Could someone please tell me what I am doing wrong here?

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zariahdiamondz

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answered 12 Years ago kalaveronicab · Accepted Answer

The problem is with chrome.storage.sync.set({key: testPrefs}

Your data is stored as

{

    key: "{"val":10}"

}

So, your code chrome.storage.sync.get('myKey') return undefinedempty object.

Solution I

Use string "key" as your key

chrome.storage.sync.get("key", function (obj) {

    console.log(obj);

});

or

Solution II

Set data through "myKey" Key.

chrome.storage.sync.set({"myKey": testPrefs})

P.S : Don't forget chrome.storage.sync is permanent storage API, Use chrome.storage.sync.clear before any further testing to see changes

References

Storage API

EDIT 1

Use this code to set variable value in Chrome.storage

function storeUserPrefs() {

    var key = "myKey",

        testPrefs = JSON.stringify({

            'val': 10

        });

    var jsonfile = {};

    jsonfile[key] = testPrefs;

    chrome.storage.sync.set(jsonfile, function () {

        console.log('Saved', key, testPrefs);

    });



}

It generates following Output

Object{

    myKey: "{"val":10}"

}