In many cases, the pages on a website consist of much content that is
common between them. Using traditional methods, that content would have
to be reloaded on every request. However, using Ajax, a web application
can request only the content that needs to be updated, thus drastically
reducing bandwidth usage and load time.
The use of Ajax can reduce connections to the server, since scripts and style sheets only have to be requested once.
jack
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Link Building