Prototype

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About

Prototype is a JavaScript Framework that aims to ease development of dynamic web applications.

http://www.prototypejs.org/

Features

  • Really nice quick shorthand for getting elements by id or by CSS class name (i.e. var el = $('id') or var el = $$('className') ).
  • Good wrapper around XHR with functions like Ajax.Request() and Ajax.Updater().
  • Nice forEach function on arrays.
  • Much more light-weight (and consequently less load time) than Dojo.