blocks|key|1303950|text|偶然发现了这个问题；对于后人来说，CouchDB和CouchBase就是为此而设计的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1303951|http://couchdb.apache.org/|offset|length|1303952|JavaScript客户端：|1303953|https://pouchdb.com/|1303954|和CouchBase：|1303955|https://www.couchbase.com/|1303956|最后，CouchBase精简版/移动版：|1303957|https://www.couchbase.com/products/lite|1303958|后者可以实现本地CouchDB/CouchBase同步。|1303959|在所有情况下，你只需访问本地数据库，当你连接到互联网时，它就可以同步。|1303960|entityMap|0|LINK|mutability|MUTABLE|url|1|2|3^0|0|0|Q|0|0|0|0|K|1|0|0|0|Q|2|0|0|0|13|3|0|0|0^^$0|@$1|2|3|4|5|6|7|15|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|16|8|@]|9|@$D|17|E|18|1|19]]|A|$]]|$1|F|3|G|5|6|7|1A|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|1B|8|@]|9|@$D|1C|E|1D|1|1E]]|A|$]]|$1|J|3|K|5|6|7|1F|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|1G|8|@]|9|@$D|1H|E|1I|1|1J]]|A|$]]|$1|N|3|O|5|6|7|1K|8|@]|9|@]|A|$]]|$1|P|3|Q|5|6|7|1L|8|@]|9|@$D|1M|E|1N|1|1O]]|A|$]]|$1|R|3|S|5|6|7|1P|8|@]|9|@]|A|$]]|$1|T|3|U|5|6|7|1Q|8|@]|9|@]|A|$]]|$1|V|3|-4|5|6|7|1R|8|@]|9|@]|A|$]]]|W|$X|$5|Y|Z|10|A|$11|C]]|12|$5|Y|Z|10|A|$11|I]]|13|$5|Y|Z|10|A|$11|M]]|14|$5|Y|Z|10|A|$11|Q]]]]

Just stumbled across this question; for posterity, CouchDB and CouchBase are designed for this:

<a href="http://couchdb.apache.org/" rel="noreferrer">http://couchdb.apache.org/</a>

The JavaScript client:

<a href="https://pouchdb.com/" rel="noreferrer">https://pouchdb.com/</a>

And CouchBase:

<a href="https://www.couchbase.com/" rel="noreferrer">https://www.couchbase.com/</a>

Finally, CouchBase Lite/Mobile:

<a href="https://www.couchbase.com/products/lite" rel="noreferrer">https://www.couchbase.com/products/lite</a>

The latter gets you native CouchDB/CouchBase synchronization.

In all cases you just access the local database and it can synchronize if and when you connect to the internet.

blocks|key|1088425|text|Store.js很好地处理了客户端存储。请注意，它支持IE6%2B和其他浏览器。对于服务器端存储，您也可以为其编写自己的脚本，因为这不是很困难。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1088426|entityMap|0|LINK|mutability|MUTABLE|url|http://github.com/marcuswestin/store.js^0|0|8|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

<a href="http://github.com/marcuswestin/store.js" rel="nofollow noreferrer">Store.js</a> deal with the client-side storage very well. Note that it supports IE6+ along with other browsers. For the server-side storage you might as well make your own script for that as it should not be difficult.

blocks|key|1088548|text|自从这个问题被提出以来，在本地存储和客户端数据库方面已经做了很多工作。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1088549|在Dive+Into+HTML5上有一个很好的本地存储选项概述。|offset|length|1088550|还有几个跨平台的JavaScript存储库，包括Lawnchair和persistence.js。|1088551|entityMap|0|LINK|mutability|MUTABLE|url|http://diveintohtml5.info/storage.html|1|http://westcoastlogic.com/lawnchair/|2|http://persistencejs.org/^0|0|1|F|0|0|O|9|1|Y|E|2|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|U|8|@]|9|@$D|V|E|W|1|X]]|A|$]]|$1|F|3|G|5|6|7|Y|8|@]|9|@$D|Z|E|10|1|11]|$D|12|E|13|1|14]]|A|$]]|$1|H|3|-4|5|6|7|15|8|@]|9|@]|A|$]]]|I|$J|$5|K|L|M|A|$N|O]]|P|$5|K|L|M|A|$N|Q]]|R|$5|K|L|M|A|$N|S]]]]

Since this question was asked, there's been a lot of work done on local storage and client side databases.

There's a great overview of local storage options at <a href="http://diveintohtml5.info/storage.html" rel="nofollow">Dive Into HTML5</a>.

There are also several cross-platform JavaScript storage libraries available, including <a href="http://westcoastlogic.com/lawnchair/" rel="nofollow">Lawnchair</a> and <a href="http://persistencejs.org/" rel="nofollow">persistence.js</a>.

blocks|key|1088308|text|我不是百分之百确定，但我认为没有这样的框架。我建议你在Google+Gears上看看。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1088309|Google+Gears支持客户端的离线存储。|1088310|另一种方法是查看TidlyWiki的源代码。他们创建了一个维基系统，将所有数据存储在客户端。|1088311|entityMap|0|LINK|mutability|MUTABLE|url|http://gears.google.com/|1|http://www.tiddlywiki.com/^0|R|C|0|0|0|8|9|1|0^^$0|@$1|2|3|4|5|6|7|R|8|@]|9|@$A|S|B|T|1|U]]|C|$]]|$1|D|3|E|5|6|7|V|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|W|8|@]|9|@$A|X|B|Y|1|Z]]|C|$]]|$1|H|3|-4|5|6|7|10|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]|P|$5|K|L|M|C|$N|Q]]]]

Iam not 100% sure, but i think there isnt such a framework. I would recommend to have a look on <a href="http://gears.google.com/" rel="nofollow noreferrer">Google Gears</a>.

Google Gears supports offline storage on client side.

Another approach would be to check out the sourcecode of <a href="http://www.tiddlywiki.com/" rel="nofollow noreferrer">TidlyWiki</a>. They have created an wiki system wich stores all data on client side.

blocks|key|1303512|text|据我所知，目前还没有哪一个库可以做到这一点。尽管这是一个可能的想法，但我必须说，我不确定建立这样的库是否是一个好的努力。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1303513|它必须提供示例，说明如何向库公开服务器数据，如何计算增量，等等。这将迫使开发人员根据库的协议更改此服务器端代码。这对于新的应用程序和网站来说可能是很棒的，但对于任何现有的网站来说，这都可能是一种痛苦，因为它具有特殊的数据结构，这使得实现它的努力并不比开发自己的Javascript来使用应用程序已经公开的当前数据来做得更好。除了潜在的安全问题之外，所有这些都很难在一个通用的javascript库中进行管理。|1303514|IMHO这是一个很好的想法，可以为特定的基于ORM的MVC框架，例如Ruby+on+Rails或Django制作包或插件。由于框架本身具有对数据结构的抽象和许多已经捆绑在一起的安全修复程序，因此使用捆绑包来实现这一点将更加可重用，也更加优雅。|1303515|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

I'm not aware of any library that does that nowadays. Even tough this is a possible idea, I must say that I'm not sure if making such library is a good effort.

It would have to provide examples of how to expose your server data to the library, how to calculate deltas, and so on. This would force the developer to change this server side code accordingly to the library's protocol.
This could be great for new apps and websites, but this could be a pain to any existing site, with particular data structure, making the effort to implement this not so much preferable to developing your own Javascript to do that with current data already exposed by the app.
All of these on top of potential security problems would be kinda hard to manage in one generic javascript library.

IMHO this is a great idea to make bundles or plugins to specific ORM based MVC frameworks, for example Ruby on Rails or Django. Since the framework itself has an abstraction to the data structure and many security fixes already bundled together, making a bundle to do that would be much more re-usable and more elegant.

blocks|key|1088496|text|据我所知，Safari、Chrome和Opera都是基于SQLite的。SQLite有一个.dump命令，它不仅适用于恢复数据库，也适用于与另一个数据库同步。因此，可以使用.dump从Javascript数据库调用它，并在必要时修改转储并将其上载到服务器数据库以执行。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1088497|但是，您需要小心SQL注入尝试。|1088498|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

As far as I know Safari, Chrome, and Opera all based on SQLite.
SQLite has a .dump command which is not only great to restore a database but to sync with another database.
Therefore, it may be possible to call this from the Javascript Database using .dump, and if necessary, modify the dump and upload it to the server database to execute.

However, you will want to be careful of SQL injection attempts.

blocks|key|1303745|text|你试过jsonengine吗？|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1303746|不确定这个项目有多活跃，但这满足了你的所有需求。|1303747|entityMap|0|LINK|mutability|MUTABLE|url|http://code.google.com/p/jsonengine/^0|3|A|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]]|C|$]]|$1|D|3|E|5|6|7|R|8|@]|9|@]|C|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]]]

Did you try <a href="http://code.google.com/p/jsonengine/" rel="nofollow">jsonengine</a>? 

Not sure how much this project is alive but this answers all yor requirments.

blocks|key|1088612|text|Firebase可以做到这一点，尽管它不是关系模型|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1088613|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Firebase does this, although it is not a relational model

I'm looking for a javascript library that will let me store data in a client side database and in the back ground automatically sync the database back to the server's database

preferable something that supports a variaty of engines in the same way jStore for jQuery does

Looking around I can find anything

javascript library for client side storage with server side sync

数据存储

数据结构

数据库

服务器

Django

jQuery

SQLite

我正在寻找一个javascript库，它可以让我在客户端数据库中存储数据，并在后台自动将数据库同步回服务器的数据库最好是支持多种引擎，就像jQuery版的jStore一样环顾四周，我能找到任何东西

问用于客户端存储和服务器端同步的javascript库
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