Google chrome extension 为什么storage.set/storage.get无法在Chrome中设置/获取数据？

我开始学习在Chrome中调试扩展。我在Chrome中有这个问题，但在Firefox webextensions中没有这个问题。问题是，在Chrome中，我无法获取已保存到存储器中的数据

我在后台脚本中有这个函数。我将断点添加到storage.set的行中。我重新启动插件，可以访问MyNamespace中的所有数据。数据。。。加载项打印安装成功的通知，但当我尝试获取数据时，日志显示空对象

MyNamespace.checkIfExists = function (item) {
  if (chrome.runtime.lastError) {
    MyNamespace.notify("check-fail");
    console.log("error:" + chrome.runtime.lastError);
    console.log(chrome.runtime.lastError);
  } else {
    if ( ! ( "initiated" in item ) )
      {
      console.log("I'm initiating .. item:");
      console.log(item);
      /* Insert new data object */
      /* This saves default values into storage */       
      chrome.storage.local.set({
        easy:     MyNamespace.data.easy,
        advanced: MyNamespace.data.advanced,
        images:   MyNamespace.data.images,
        inspector:MyNamespace.data.inspector,
        extractor:MyNamespace.data.extractor,
        profiles: MyNamespace.data.profiles,
        default_profiles: MyNamespace.data.default_profiles        
        }, 
        () => {
          if (chrome.runtime.lastError) 
            { 
            MyNamespace.notify("write-fail");            
            console.log("local.set Error: " + chrome.runtime.lastError); }
          else
            {                         
            MyNamespace.notify("write-succeess");
            chrome.storage.local.get( {initiated: undefined, easy:undefined}, 
              (result) => {
                if (typeof result === undefined )
                  MyNamespace.notify("write-fail");
                console.log("found:");
                console.log(result);
                console.log("/end");
                }
              )
            chrome.storage.local.set( {initiated:true} );            
            MyNamespace.initiated = true;
            }
        } );
      }
    else
      MyNamespace.initiated = true;
  }
};

控制台中的结果：

I'm initiating .. item:
namespace.js:125 Object {}
namespace.js:149 found:
namespace.js:150 Object {}
namespace.js:151 /end

控制台中没有错误。在Chrome中，对象为空。在Firefox中，我看到一个要保存的对象，一个未定义的属性

manifest.json

{
  "applications": {
  "gecko": {
    "id": "some-options@mozilla.org",
    "strict_min_version": "48.0a1"
    }
  },
"description": "An example options ui",
"homepage_url": "https://github.com/mdn/webextensions-examples/tree/master/favourite-colour",
"manifest_version": 2,
"name": "Favourite colour",
"version": "1.0",
"icons": {  
  "48": "icons/eye-icon-colored-48.png"    
},
"options_ui": {
  "page": "options.html",
  "open_in_tab": true
  },
"browser_action": {
  "default_title": "Adapt page",
  "browser_style": true,
  "default_popup": "popup/settings.html",
  "default_icon": {
    "48": "icons/eye-icon-48.png"
  }
},
"web_accessible_resources": [
  "icons/hotkeys-icon-32.png"
  ],
"permissions": ["storage", "tabs", "activeTab", "notifications"],
"background": {
  "page": "background_scripts/background_scripts_bug_fix.html"
 },
"content_scripts": [
    {
    "matches": ["<all_urls>" ],
    "run_at": "document_start",
    "js": [
      "content_scripts/jquery-3.0.0.js",
      "content_scripts/namespace.js",
      "content_scripts/easy.js",
      "content_scripts/addListeners.js"
      ]
    }
  ],
"commands": {
  "easy": {
    "suggested_key": {
      "default": "Ctrl+Shift+U"    
    },
    "description": ""
  }
 }
}

我得到了这个日志：

    namespace.js:241 Storage key "default_profiles" in namespace "local" changed. Old value was "Object", new value is "undefined".
    namespace.js:241 Storage key "easy" in namespace "local" changed. Old value was "Object", new value is "undefined".
    namespace.js:241 Storage key "extractor" in namespace "local" changed. Old value was "Object", new value is "undefined".
    namespace.js:241 Storage key "images" in namespace "local" changed. Old value was "Object", new value is "undefined".
    namespace.js:241 Storage key "initiated" in namespace "local" changed. Old value was "true", new value is "undefined".
    namespace.js:241 Storage key "inspector" in namespace "local" changed. Old value was "Object", new value is "undefined".
    namespace.js:241 Storage key "profiles" in namespace "local" changed. Old value was "Object", new value is "undefined".
    namespace.js:124 I'm initiating .. item:
    namespace.js:125 Object {}
    namespace.js:241 Storage key "advanced" in namespace "local" changed. Old value was "undefined", new value is "Object".
    namespace.js:241 Storage key "default_profiles" in namespace "local" changed. Old value was "undefined", new value is "Object".
    namespace.js:241 Storage key "easy" in namespace "local" changed. Old value was "undefined", new value is "Object".
    namespace.js:241 Storage key "extractor" in namespace "local" changed. Old value was "undefined", new value is "Object".
    namespace.js:241 Storage key "images" in namespace "local" changed. Old value was "undefined", new value is "Object".
    namespace.js:241 Storage key "inspector" in namespace "local" changed. Old value was "undefined", new value is "Object".
    namespace.js:241 Storage key "profiles" in namespace "local" changed. Old value was "undefined", new value is "Object".
    namespace.js:152 found:
    namespace.js:153 Object {}
namespace.js:154 /end
namespace.js:241 Storage key "initiated" in namespace "local" changed. Old value was "undefined", new value is "true".

那么这意味着什么呢？我在Chrome中看到了单词Object（），白色字母（黑色主题），但它不像我可以单击并看到对象的链接。这显示数据已加载。但是为什么我不能查看对象中的数据呢

我无法进入回调，因此无法查看数据

我无法在控制台中查看对象{}中的内容。。。。它看起来是空的，但在侦听器中，我收到的消息存储已更改

存储中的结果。获取回调结果为空。。。不包含任何属性

我已使用以下代码进行了检查： for（var输入结果） if（hasOwnProperty.call（result，key）） 控制台日志（“键：+键）

在Chrome中没有列出属性，在Firefox工具箱/控制台中列出属性

据我所知，storage.set回调应该在进行保存更改并关闭db文件进行写入后触发。所以我认为storage.get from inside storage.set应该不会有任何问题

有人能澄清一下这里发生了什么吗？为什么在Firefox中可以这样做，但在Chrome中却不行？如何解决这个问题

chrome.storage.local.get（{initiated:undefined，easy:undefined}

由于使用parameters对象的中间字符串化只检索（，）已定义的键：

JSON.stringify（{a:undefined，b:undefined}）

生成

'{}'

-为空

当您不提供默认值时，请改用键名数组：

chrome.storage.local.get( ['initiated', 'easy'], 

注意：使用中的

%o

或

%o

显示对象的实际内容

chrome.storage.local.get（{initiated:undefined，easy:undefined}

由于使用parameters对象的中间字符串化只检索（，）已定义的键：

JSON.stringify（{a:undefined，b:undefined}）

生成

'{}'

-为空

当您不提供默认值时，请改用键名数组：

chrome.storage.local.get( ['initiated', 'easy'], 

---

另外，在中使用

%o

或

%o

来显示对象的实际内容。

谢谢。你救了我。IDK为什么我以前没有尝试过。我花了一周时间试图解决这个问题。谢谢。你救了我。IDK为什么我以前没有尝试过。我花了一周时间试图解决这个问题。