Updating display of elements on the web page without refreshing the whole page

Posted by ivorossi3 on Stack Overflow See other posts from Stack Overflow or by ivorossi3
Published on 2010-03-17T11:31:15Z Indexed on 2010/03/17 11:41 UTC
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web-development

Last time I coded a web application was almost 10 years ago. I used Java/JSP/HTML/CSS etc. I've been coding non-web applications only ever since.

When I look at modern sites now (like this one), I realize how my web development skills are obsolete. Maybe the most obvious "feature" that I wouldn't know how to implement now is the update of elements on the page after user input without having to refresh the whole page (e.g. the voting/downvoting here updates the vote count without reloading the whole page). What are the basic technologies behind this?

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