Page redirection without refresing
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I want redirection without refreshing the whole parent page. Is there any way through which I can perform this. I need the functionality like the site below

[https://github.com/jquery/jquery][1]


  [1]: https://github.com/jquery/jquery

Like in the above site the listing of files are there under jQuery. When we click on any of the file it will redirect us to that file without page refresh.

Any help would be appreciated. Thanks.