The ScriptEngine function has three possible return values: JScript, VBScript, and VBA. When implemented in JavaScript scripts, this function returns JScript.
<html> <script language="JScript1.1"> <!-- document.write(ScriptEngine()); document.write(" " + ScriptEngineMajorVersion() + "."); document.write(ScriptEngineMinorVersion()); document.write(" build " + ScriptEngineBuildVersion()); --> </script> </html>