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Which are limitations of AJAX?

  •  Back functionality can't work because the dynamic pages won't register themselves to the browsers cache. Hence the use Iframe will become required. 
  •  The page cannot be bookmarked if it is developed using Ajax. 
  •  If java script is not enabled, Ajax will stop working. 
  •  Because different components of the pages are loaded at different times, response time may be slow. 
  •  Because different components of the pages are loaded at different times it may create confusion for the user.