我可以在Chrome中增加QUOTA_BYTES_PER_ITEM吗？ [英] Can I increase QUOTA_BYTES_PER_ITEM in Chrome?

问题描述

有没有办法增加chrome.storage.sync.QUOTA_BYTES_PER_ITEM？

对我来说，默认的4096字节有点短。

我试图执行

  chrome.storage.sync.QUOTA_BYTES_PER_ITEM = 8192; 
  

然而，似乎实际的限制并没有改变。

我该怎么做？

解决方案

不， QUOTA_BYTES_PER_ITEM 仅供参考;这不是一个可设定的价值。不过，您可以使用 QUOTA_BYTES_PER_ITEM 的值将项目分成多个项目：

  function syncStore（key，objectToStore，callback）{
 var jsonstr = JSON.stringify（objectToStore）; 
 var i = 0; 
 var storageObj = {}; 
 
 //将jsonstr分割成块，并将它们存储在由`key_i`索引的对象中
 while（jsonstr.length> 0）{
 var index = key +_ + i ++; 
 
 //由于密钥使用了一些每个商品的配额，请查看剩余的价值
 //还修剪掉2用于存储时间`stringify`添加的报价
 var valueLength = chrome.storage.sync.QUOTA_BYTES_PER_ITEM  -  index.length  -  2; 
 
 //修剪细分，因此即使在存储时再次运行JSON.stringify，它也会足够小
 var segment = jsonstr.substr（0，valueLength）; 
 while（JSON.stringify（segment）.length> valueLength）
 segment = jsonstr.substr（0，--valueLength）; 
 
 storageObj [index] = segment; 
 jsonstr = jsonstr.substr（valueLength）; 
} 
 
 //存储所有的块
 chrome.storage.sync.set（storageObj，callback）; 
 
 
 
 
 
 $ b然后编写一个类似的提取函数，通过按键提取并将对象粘合在一起。
 
Is there any way to increase the chrome.storage.sync.QUOTA_BYTES_PER_ITEM ?

For me, the default 4096 Bytes is a little bit short.

I tried to execute
chrome.storage.sync.QUOTA_BYTES_PER_ITEM = 8192;
However, it seems that the actual limit doesn't change.

How can I do this?
解决方案
No, QUOTA_BYTES_PER_ITEM is there for reference only; it is not a settable value. You could use the value of QUOTA_BYTES_PER_ITEM to split an item up into multiple items, though:
function syncStore(key, objectToStore, callback) {
    var jsonstr = JSON.stringify(objectToStore);
    var i = 0;
    var storageObj = {};

    // split jsonstr into chunks and store them in an object indexed by `key_i`
    while(jsonstr.length > 0) {
        var index = key + "_" + i++;

        // since the key uses up some per-item quota, see how much is left for the value
        // also trim off 2 for quotes added by storage-time `stringify`
        var valueLength = chrome.storage.sync.QUOTA_BYTES_PER_ITEM - index.length - 2;

        // trim down segment so it will be small enough even when run through `JSON.stringify` again at storage time
        var segment = jsonstr.substr(0, valueLength);           
        while(JSON.stringify(segment).length > valueLength)
            segment = jsonstr.substr(0, --valueLength);

        storageObj[index] = segment;
        jsonstr = jsonstr.substr(valueLength);
    }

    // store all the chunks
    chrome.storage.sync.set(storageObj, callback);
}
Then write an analogous fetch function that fetches by key and glues the object back together.

                        
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