title: Web sockets make ajax/CORS obsolete?
body: <p>Will web sockets when used in all web browsers make ajax obsolete?</p>
  
  <p>Cause if I could use web sockets to fetch data and update data in realtime, why would I need ajax? Even if I use ajax to just fetch data once when the application started I still might want to see if this data has changed after a while.</p>
  
  <p>And will web sockets be possible in cross-domains or only to the same origin?</p>