Ajax Girl

A new version of Protoype has dropped.

Prototype 1.5.1 RC 3 gives us features such as:

• Ajax.Requests now supports per-request onCreate callbacks. [#8011]
• JSON strings are automatically stripped of their security delimiters (if present) before eval. More details on this security issue here (PDF document). [#7910]
• all toJSON methods now generate YAML-loadable JSON. [#7883]
• Event.element now returns an extended element. [#7870]
• Linefeed normalisation is now prevented in IE on String#escapeHTML and String#unescapeHTML for consistency with other browsers.
• Added a new Element.childElements method (shorter alias of Element.immediateDescendants).
• Added a new Element.firstDescendant method (same as using Element.down with no arguments).

Performance improvements:

• Faster $$() utility and Element.getElemementsBySelector method. [#7873], [#7901]
• Optimized Element.next, Element.down, Element.up and Element.previous DOM methods. [#7848]
• Speed improvements of String#escapeHTML and String#unescapeHTML in IE and Safari.

And plenty of bug fixes. You can see the gory details in the change log.

Source: Ajaxian
Original Article: http://ajaxian.com/archives/prototype-151-rc-3-released