whats NEW ...] Runtime errors now reported as exceptions ] Number formatting enhancements ] Regular Expression enhancements ] Conditional Function Declarations] Function Expressions ] Multiple Catch Clauses ] Getters and Setters ] Constants

whats NEW ...] e4x - features for processing xml in the js language ( deprecated)] Array Extras - seven new methods for item location(2) and iteration(5) ] Array and String generics - ] For each in -

whats NEW ...] Generators and Iterators, ] Array Comprehensions ] Block Scope with let ] Desctructuring Assignment

whats NEW ...] ] Expression Closures, ] Generator Expressions -, ] Array Extras - , ] Destructuring for in -

whats NEW ...] object.getPrototypeOf() method ] native support for JSON parse and stringify ] 3 new String methods trim, trimLeft, trimRight

whats NEW ...] new functions, ] new ecmascript 5 features, ] other standardization work, ] new objects ] changes to global objects ] additional changes ] javascript api(spidermonkey) changes

whats NEW ...] string startsWith, endsWith, contains methods, ] string methods link + anchor escape the quote ] ParallelArray object ] iterate Map/Set ] disabeld E4X