Full compatibility with new browsers. This version of Prototype fully supports 1.0 and larger versions of Google Chrome, and Internet Explorer 8 in both compatibility and super-standard versions.
New mouse events. Internet Explorer’s proprietary events — mouseenter and mouseleave — are now available for all browsers.
Improved speed and economy. The frequently used methods Function # bind, String # escapeHTML and Element # down have become faster, and Prototype is better at tidying up.
Assembled with Sprockets. You can now include the Prototype source code repository in your application and use Sprockets for dependency management and distribution.
Internal documentation by PDoc. Our API documentation is now stored inside the source code via PDoc, so it’s easier to send patches or see documentation for a specific version.