chrome.storage.sync.set isn't saving data

Question

I am storing an array URLarry, using chrome.storage.sync.set in background.js and accessing it from options.js. Everything is running perfectly fine. I can use the URLarray in options.js with no problem. But when I shutdown chrome and reopen it, all the data disappears. Please advice.

background.js

 save["myKey"] = URLarray; chrome.storage.sync.set(save, function() { // console.log('Settings saved'); });

URLarray is populated as follows:

URLarray.push({website: websiteName, time:0, startTime:0, endTime:0});

options.js

chrome.storage.sync.get('myKey', function (obj) { // console.log('myKey', obj); x = obj.myKey; console.log(x); }

manifest.json

{ "name": "Animated Page Action", "description": "This extension adds an animated browser action to the toolbar.", "version": "1.2", "background": { "scripts": ["jquery-3.1.1.min.js","background.js"] }, "page_action": { "default_title": "First icon", "default_icon": "icon_0.png" }, "options_page": "options.html", "permissions": ["tabs","storage"], "manifest_version": 2 }

likely an issue with your hardware. try on a different computer. — Zig Mandel
– Zig Mandel, Commented Nov 6, 2016 at 12:50
Hi @ZigMandel, I did as you say but no success. Can you tell any other way to do this? — Sandeep Gupta
– Sandeep Gupta, Commented Nov 6, 2016 at 14:16
to troubleshoot, try instead saving JSON.stringify(array) and see if that one survives. — Zig Mandel
– Zig Mandel, Commented Nov 6, 2016 at 16:41
URLarray is a simple array so the problem is elsewhere. The posted code isn't enough to diagnose it. Use the devtools debugger to set breakpoints inside the background page script functions and check the actual values of your variables. — woxxom
– woxxom, Commented Nov 7, 2016 at 11:45
possible duplicate: stackoverflow.com/questions/34953717/… — Android Enthusiast
– Android Enthusiast, Commented Nov 7, 2016 at 11:58

Xan · Accepted Answer · 2016-11-07 14:56:42Z

Your background code (which you don't include here) never actually reads data.

It does, however, write data, using that snippet you show, which is initialized by an empty array.

So each time you open the extension again, the data in background is empty, and it overwrites the saved data. To fix this, you must first perform initialization of your background URLarray from storage.

I am so thankful to you. I couldn't have figured it out myself. :)

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