Javascript Coverage Validator - Feature List

Javascript Coverage Validator has many useful features not found in other code coverage analysis tools.

Number of lines per file
Number of lines visited per file
Visit count per line
Visit count per file
Percentage of lines visited in each file
Coverage statistics updated as the application executes
Ability to sort the data for display
Colour coded display for at-a-glance detection of files that have not been visited
Source code display with line highlighting for editing source code and/or examining source code in situ with the statistics
View coverage statistics in real time, as they change whilst your application executes

Coverage view. Shows coverage statistics on a file by file basis
Functions view. Shows coverage statistics on a class-by-class, file-by-file, function-by-function, and functions-by-line-count basis
File and line view. Shows coverage statistics on a file by file basis with the ability to drill down to each line and the source code for the line
Diagnostic messages. For detecting unforseen errors in the instrumentation. If things are not behaving as you expect, the answer may be here

Support for executing from the command line, allowing automated code coverage for all your regression tests. The command line also provides control over the HTML and XML export functions
Support for session merging, so that multiple sessions can be merged to form an overall coverage score. This is vital for regression test support
Interactive session merging. You can merge sessions using the user interface and view the results immediately
Automatic session merging. As well as the command line and interactive merging, coverage results can be automatically merged into a dedicated session

Works with Mozilla Firefox 3.6, 3.5, 3.1, 3.0, 2.0, 1.5, 1.0.6
Works with Flock 0.7
Works with XulRunner 1.8
Configurable choice of JavaScript (jsNNNN.dll) runtimes, allowing you to choose which JavaScript runtime version you want to use
What about Internet Explorer support?.

Very configurable, almost all options are configurable by the user. Includes an option to reset to the default settings