
open help file topic in help viewer - IE 11 onlyĪlert ("attempted to launch the showHelp file. for optional use cases when CHM resides in another place open help file in help viewer - IE 11 only AFAIK - showHelp() isn’t a javascript (or JScript) function - it’s an Microsoft Internet Explorer DHTML method. Please make shure to test this using Internet Explorer 11 (context menu, open with IE11). Please note window.showHelp opens a HTML help file (.chm) in an external application (Help Viewer hh.exe). So, for test case only I have a test.htm file and a CHM-example.chm file in the same local D:\_working folder. The ms-its protocol works with Microsoft Internet Explorer 4.0 or later, but is not supported in all browsers. The prefix ms-its is a pluggable protocol from earlier days that follows old standards set up by the World Wide Web Consortium (W3C). The ability to look inside an ITS (CHM) file is something unique to Microsoft Internet Explorer only and Internet Explorer (NOT Microsoft Edge browser) could load a locally path like: ms-its:D:\_temp\CHM-example.chm::/garden/garden.htm Internet Explorer - open topic from CHM help file chm for download, but that’s as far as it goes.

chm on the user’s local drive, and you can link to a. HTML Help 1.x does not have the capability of delivering compressed help over http. A series of security fixes years ago has reduced HTMLHelp to functioning as local help only.

It only works for the CHM help file itself. Relative path specifications including topic specification within the CHM do not work according to my tests. The short story - use full path when looking inside a ITS (CHM) file. Is there a way to open CHM help file to a specific topic page via JavaScript? Home > Knowledge Base (Content) Open CHM topic by JavaScript using Internet Explorer
