An intrinsic global object that sends output to a debugger.
You do not instantiate the Debug object. You can access all its properties and methods by calling function.
There are different ways to debug Internet Explorer and Windows Store apps. In Windows Store apps, the write and writeln functions of the Debug object display strings in the Visual Studio Output window at run time. For more information about debugging Windows Store apps, see Debug Windows Store apps in Visual Studio.
If the script is not being debugged, the functions have no effect.
Supported in the following document modes: Quirks, Internet Explorer 6 standards, Internet Explorer 7 standards, Internet Explorer 8 standards, Internet Explorer 9 standards, Internet Explorer 10 standards, Internet Explorer 11 standards. Also supported in Store apps (Windows 8 and Windows Phone 8.1). See Version Information.