Retrieve visitor's bookmarks

I'm working on a website where there is a need to know the visitors' bookmarks. For security reasons the visitors could 开发者_如何学JAVAput a login and a password.

I have no idea on how to proceed and the languages I could use to do this (JavaScript or PHP would be great).

Someone has any idea or already done something similar?

You have to ask the users to export their bookmarks to a file and them have them upload that.

To do this, you'll have to create a browser plug-in/add-on/extension and have the user install it and give it permission to access their bookmarks; or similarly with a signed script. For obvious reasons, there's nothing you can do in a plain old web page that will give you this information.

You can't pull anonymous users' bookmarks.