I am doing azure project in that i want to get list data from sharepoint online(Office365)
So it is possible using jquery?
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The simplest way is to either use REST Api that works for every list in SharePoint, via /_vti_bin/ListData.svc which you could use via $.ajax or $.getJSON calls.
You'll want to take a look at the SPServices library if you're wanting to get to SharePoint list data with jQuery. It wraps all the web services into easily accessible functions that are a snap to work with.
Since you haven't posted much detail, review the operations and post back with new questions if you have any issues, or post on the spservices discussion board.