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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 (
throwandtry...catch) inoperatorinstanceofoperator
Changed functionality in JavaScript 1.4
eval()changes (cannot be called indirectly and no longer a method ofObject)argumentsnot a property of functions- Deprecated
Function.arityin favor ofFunction.length - Changes to LiveConnect