New in JavaScript 1.6

The following is a changelog for JavaScript 1.6. This version was included in Firefox 1.5 (Gecko 1.8), which was released in November 2005. The corresponding ECMA standard is ECMA-262 Edition 3 and ECMAScript for XML (E4X) with some additional features. Several new features were introduced: E4X, several new Array methods, and Array and String generics.

New features in JavaScript 1.6

• Support for ECMAScript for XML (E4X) for creating and processing XML content within JavaScript has been added. See  for details.
• Array.prototype.indexOf()
• Array.prototype.lastIndexof()
• Array.prototype.every()
• Array.prototype.filter()
• Array.prototype.forEach()
• Array.prototype.map()
• Array.prototype.some()
• Array generics
• String generics
• for each...in

Changed functionality in JavaScript 1.6

• A bug in which arguments[n] cannot be set if n is greater than the number of formal or actual parameters has been fixed.