The following table lists the version of Microsoft JScript implemented by host apps.

Host	JScript Version 1.0	JScript Version 2.0	JScript Version 3.0
Microsoft Internet Explorer 3.0	X
Microsoft Internet Information Server 1.0		X
Microsoft Internet Explorer 4.0			x
Microsoft Internet Information Server 4.0			x
Microsoft Windows Scripting Host 1.0			x
Microsoft Outlook 98			x