Firefox 扩展无法访问本地存储

Question

我有一个 Chrome 扩展，我正在尝试适应 FF。当我尝试访问本地存储时，代码失败了。控制台没有JS错误。我是 FF 的新手，所以问题可能很简单。为什么执行在 var gettingItem = browser.local.storage.get();

停止

此外，当我在 FF 中加载我的扩展程序时，我没有看到像在 Chrome 中那样的选项菜单。如何打开选项面板？

我的清单：

{
    "manifest_version": 2,
    "name": "My name's mod",
    "short_name": "Mod",
    "version": "1.2.0",
    "description": "Make the ",
    "web_accessible_resources": [
        "base-theme.css",
        "light-theme.css",
        "wider-theme.css",
        "nobg-theme.css"
    ],
    "permissions": [
        "storage",
        "cookies",
        "*://forums.site.com/*"
    ],
    "content_scripts": [{
        "js": [
            "cg-mod.js",
            "cg-forum-class.js",
            "cg-forum-writer.js",           
            "cg-onload.js"
        ],
        "matches": ["https://forums.site.com/*", "http://forums.site.com/*" ]
    }],
    "icons": { 
        "16": "icon16.png",
        "48": "icon48.png",
        "128": "icon128.png" },
    "options_ui": {
        "page": "options.html",
        "chrome_style": true
    }
}

这是被调用的第一个文件：

//
function IsChrome(){
    var isOpera = !!window.opera || navigator.userAgent.indexOf(' OPR/') >= 0;
    var isChrome = !!window.chrome && !isOpera;              // Chrome 1+
    return isChrome;
}

function IsFirefox()
{
    var isFirefox = typeof InstallTrigger !== 'undefined';   // Firefox 1.0+
    return isFirefox;
}

function GetStorage( callback ){    

    var defaultOptions = {
        Theme: 'wider',
        ShowSignatures: true,
        TheNewlyArrived: false,
        Kickstarter: false,
        Recruitment: false,
        Off: false
    };

    if( IsChrome() )
    {
        chrome.storage.sync.get( defaultOptions, function(items) {
            console.log( "Get Storage for Chrome");
            console.log( items );
            callback( items );
        }); 
    }else if( IsFirefox() ) {
        console.log("is firefox: "+ IsFirefox());
        //browser.storage.sync.get
        var gettingItem = browser.local.storage.get();
        console.log(gettingItem);
        console.log("THE PROBLEM IS HERE ^^");
/*      gettingItem.then((items) => {
            console.log( "Get Storage for Firefox");
            callback( items );
        }); */
    }
}

然后在我的 onload 文件中，我有这个：

/*
Run these commands on startup.
*/

// link the custom CSS as a stylesheet to give it higher priority
function Onload( storage )
{
    console.log( "storage: ");
    console.log( storage );

    // If off is true, they don't want to load the extension...
    if( storage.Off )
        return;

    var link = document.createElement('link');
    if( IsChrome() ){
        link.href = chrome.extension.getURL( 'base-theme.css' );        
    } else if( IsFirefox() ) {
        link.href = browser.extension.getURL( 'base-theme.css' );       
    }
    link.type = 'text/css';
    link.rel = 'stylesheet';
    document.getElementsByTagName("head")[0].appendChild(link);

    var link = document.createElement('link');
    if( IsChrome() ){
        link.href = chrome.extension.getURL( storage.Theme +'-theme.css');
    } else if( IsFirefox() ) {
        link.href = browser.extension.getURL( storage.Theme +'-theme.css');
    }
    link.type = 'text/css';
    link.rel = 'stylesheet';
    document.getElementsByTagName("head")[0].appendChild(link);

    if( ! storage.ShowSignatures )
        ForumWriter.ToggleVisibility( 'Signature' );
}

console.log("get storage pre");
// Call the Google values through a callback
GetStorage( Onload );   
console.log("get storage post");

控制台显示：

Name says hello! (proves the files are loading in the right oder)
get storage pre  
is firefox: true

Answer 1

问题来自这一行：

browser.local.storage.get()

你搞混了，local是属性的存储，而storage是属性的浏览器。

browser.storage.local.get()

但是查看您的 chrome 实现，您似乎想要访问同步存储...

browser.storage.sync.get()

还有。我真的很想指出，你正在加倍你的代码库，应该避免这种情况，以方便未来的维护。我向您推荐这段代码：

var client;
if( IsChrome() ){
    client= chrome;        
} else if( IsFirefox() ) {
    client = browser;       
}

那么你就可以替换所有看起来像这样的片段

if( IsChrome() ){
    link.href = chrome.extension.getURL( 'base-theme.css' );        
} else if( IsFirefox() ) {
    link.href = browser.extension.getURL( 'base-theme.css' );       
}

有

link.href = client.extension.getURL( 'base-theme.css' );

Firefox 扩展无法访问本地存储

Firefox extension fails on accessing local storage

javascript

local-storage

firefox-addon-webextensions