Chrome extension, Store data

Question

I've read this question: Chrome Extensions & Javasctipy Database but I want an answer with more details and more clear.

How can I store some of my extension settings?

Is it possible to use a database to do such things with JavaScript?

Is there any good tutorial on it?

I don't want to use Local Storage, because I do not want the behavior of SESSIONS

Thanks.

Solution 1

You could use chrome.storage.sync or chrome.storage.local (docs). Both are local storage (not session storage); sync has the additional advantage that it syncs to the user's Google account if they've connected Chrome to it.

Solution 2

The following page lists the storage mechanisms in HTML5. WebSQL gives you a pretty good database for your javascript to use.

http://www.html5rocks.com/en/features/storage

UPDATE: It has been some time since I posted this. WebSQL has been dropped. Browsers will probably still continue to support it, but all the implementations have been SQLite. IndexedDB is the way to go now. I have used it and it is a little hard to get into, but works well for a client side database.

UPDATE AGAIN: Chrome changing things. See T.J. Crowder's Answer.

Solution 3

I believe this is a simple solution for you if you just want to save some settings. It also has some examples, hope it helps.

https://developer.chrome.com/extensions/storage.html

Comments

[McCee]

Welcome to Stack Overflow! It would be better to post your examples here rather than using a link, for posterity's sake. Links can become broken, so better to have a record of it here.

[Volatil3]

So SQL like implementation will not be supported anymore? I am using WebSQL but somehow I can't even insert data into it via Extension nor it' viewable in INspector: stackoverflow.com/questions/36324096/…

[duckbrain]

WebSQL was dropped as a proposed standard. I would suggest using IndexedDB. You will find better cross-browser support for it, and it is less likely to be deprecated for Chrome extensions. I don't know of any plans to remove WebSQL from Chrome though, so you may be fine. programmers.stackexchange.com/questions/220254/…

[c-an]

Will it end after April? like Google+ service.

[c-an]

Is IndexedDB usable for the Chrome extensions now?

[T.J. Crowder]

@ChanjungKim - No, they're completely unrelated.