New in JavaScript 1.4

The following is a changelog for JavaScript 1.4, which was only used for Netscape's server side JavaScript released in 1999. The old Netscape documentation can be found on archive.org.

New features in JavaScript 1.4

• Exception handling (throw and try...catch)
• in operator
• instanceof operator

Changed functionality in JavaScript 1.4

• eval() changes (cannot be called indirectly and no longer a method of Object)
• arguments not a property of functions
• Deprecated Function.arity in favor of Function.length
• Changes to LiveConnect