help chrome.storage.local.get

[Thien Hokhac]

file manifest.json

{

  "manifest_version": 2,

  "name": "gg",

  "description": "jj",

  "version": "1.0",

  "browser_action": {

    "default_icon": "images/icon.png"

    },

     "background": {

        "persistent": false,

        "scripts": ["js/jquery.min.js","js/popup.js"]

        },

  "icons": {

    "64": "images/icon_64.png"

  },

  "web_accessible_resources": [

  "styles/popup.css", "styles/jquery-ui.css", "js/jquery-ui.js", "js/main-pixel.js"

  ],

  "permissions": [

  "downloads",

  "activeTab",

  "tabs",

  "storage",

  "https://ajax.googleapis.com/"

  ],

  "content_scripts": [{

  "js": ["js/jquery.min.js", "js/contentscript.js"],

  "matches": [

  "http://*/*",

  "https://*/*",

  "*://*/*"

  ],

  "css": ["styles/style.css"],

  "run_at": "document_end",

  "all_frames": true

  }],

  "content_security_policy": "script-src 'self' https://www.google-analytics.com 'unsafe-eval'; object-src 'self'; style-src * 'unsafe-inline';"

}

file contentscript.js

chrome.storage.onChanged.addListener(function(changes, namespace) {

for (key in changes) {

var storageChange = changes[key];

}

});

chrome.storage.local.get("data2", function(items) {

if (!chrome.runtime.error) {

console.log(items.data2);

}

});

file popup.js

var code = [

  'var mainWrap = document.createElement("input");',

  'mainWrap.id = "value"',

  'document.body.appendChild(mainWrap);',

  'var react = document.createElement("script");',

  'react.src = chrome.extension.getURL("main.js");',

  'react.setAttribute("type", "text/javascript");',

  'document.body.appendChild(react);'

].join("\n")

chrome.browserAction.onClicked.addListener( function(tab){

  if (tab) {

    chrome.tabs.executeScript(tab.id, {

      code: code 

    });

  }

});

});

file main.js 

//error here

$('#value').val(items.data2);  // underfile

please help 

[Antony Sargent]

The chrome.storage functions are asynchronous, so it looks like you have 2 problems:

-You seem to be trying to access "items" before the callback to chrome.storage.local.get has run

-The "items" parameter to the storage.local.get callback is only in scope during the lifetime of the callback, so even if your code in main.js ran after the callback fired, items would no longer be a valid reference to it

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