User recommendation implementation in the search engine based on Ajax

With the exponentially growing amount of information available on the Internet, the task of retrieving interested documents has become increasingly difficult. In many cases, the probability of retrieving proper information declines because of ambiguous problem description. With the user recommend function based on Ajax technology, user can get appropriate reference prompt from search engine, without submitting and refreshing, just like desktop application. Thanks to this intelligent user interface, using search engine has become more convenient.