Question

3

Store an array with chrome.storage.local

rated 0 times [ 5] [ 2] / answers: 1 / hits: 26310 / 11 Years ago, fri, may 17, 2013, 12:00:00

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.

chrome.storage.local.get(null, function(userKeyIds){

    if(userKeyIds===null){

        userKeyIds = [];

    }

    var userKeyIdsArray = JSON.parse(userKeyIds);

    // Here I have an Uncaught SyntaxError: Unexpected token o

    userKeyIdsArray.push({keyPairId: keyPairId,HasBeenUploadedYet: false});

    chrome.storage.local.set(JSON.stringify(userKeyIdsArray),function(){

        if(chrome.runtime.lastError){

            console.log(An error occured : +chrome.runtime.lastError);

        }

        else{

            chrome.storage.local.get(null, function(userKeyIds){

                console.log(userKeyIds)});

        }

    });

});

How could I store an array of objects like {keyPairId: keyPairId,HasBeenUploadedYet: false} ?

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brynneg

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2 Years ago

answered 11 Years ago kaitlynnb · Accepted Answer

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)

        });

    });

});