chrome.storage.local.get并设置 [英] chrome.storage.local.get and set

问题描述

我试图在我的扩展中使用 chrome.storage.local ，它似乎不起作用。我使用 localStorage 但意识到我无法在多页内容脚本中使用它。

是我想到的：

  function save（）
 {
 var channels = $ （ #channels）VAL（）; 
 var keywords = $（＃keywords）。val（）; 
 
 chrome.storage.local.set（{'channels'：channels}）; 
 chrome.storage.local.set（{'keywords'：keywords}）; 
} 
  

我相信我正在做保存（ ）正确，但问题出现在 load（）中：

 函数load（）
 {
 var channels =; 
 chrome.storage.local.get（'channels'，function（result）{
 channels = result; 
 alert（result）; 
}）; 
 
 var keywords =; 
 chrome.storage.local.get（'keywords'，function（result）{
 keywords = result; 
 alert（result）; 
}）; 
 
 $（＃channels）。val（channels）; 
 $（＃keywords）。val（keywords）; 
} 
  

当警报触发时，它会输出 [object对象。这是为什么？我究竟做错了什么？我查看了文档/示例，但似乎无法找出问题所在。 解决方案

此代码适用于我：

 函数load（）{
 var channels =; 
 var keywords =; 
 chrome.storage.local.get（'channels'，function（result）{
 channels = result.channels; 
 alert（result.channels）; 
 $（＃频道）。val（频道）; 
}）; 
} 
  

Chrome.storage.local.get（）返回一个包含键值映射项的对象，因此您必须在搜索中使用键的索引

IMP：

感谢Rob鉴定： Chrome.storage.local.get（）是 异步 ，您应该修改您的代码以确保它们在回调（）成功后可以正常工作。 如果您需要更多信息，请告知我们。

I'm trying to use chrome.storage.local in my extension, and it doesn't seem to work. I used localStorage but realized that I can't use it in content scripts over multiple pages.

So, this is what I've come up with:

function save()
{
    var channels = $("#channels").val();
    var keywords = $("#keywords").val();

    chrome.storage.local.set({'channels': channels});
    chrome.storage.local.set({'keywords': keywords});
}

I do believe I'm doing the save() right, but the problem comes up in load():

function load()
{
    var channels = "";
    chrome.storage.local.get('channels', function(result){
        channels = result;
        alert(result);
    });

    var keywords = "";
    chrome.storage.local.get('keywords', function(result){
        keywords = result;
        alert(result);
    });

    $("#channels").val(channels);
    $("#keywords").val(keywords);
}

When the alerts trigger, it prints out [object Object]. Why is that? What am I doing wrong? I looked at the documentation/examples, but I can't seem to pinpoint the problem.

解决方案

This code works for me:

function load() {
    var channels = "";
    var keywords = "";
    chrome.storage.local.get('channels', function (result) {
        channels = result.channels;
        alert(result.channels);
        $("#channels").val(channels);
    });
} 

Chrome.storage.local.get() returns an object with items in their key-value mappings, so you have to use the index of the key in your search pattern.

IMP:

Thanks to Rob for identifying: Chrome.storage.local.get() is asynchronous, you should modify your code to ensure they work after callback() is successful.

Let me know if you need more information.

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