In 1997-200x days, when I have been programming in VB3-6 , there was a problem named ”DLL Hell”.
I have been hoping that, with the introduction of .NET, we will escaping this – and I have had my request answered( ok, from .NET 2 )
- Same application use jquery 1.4 + http://knockoutjs.com/ 1.1.2 (to can modify dynamically some textboxes) + other js( a date time formatter,jquery ui and others)- . Now , in IE9 RC , jquery1.4 does not function – and you have to use jquery1.5.1.rc also.Please tell me how to know what modifications the other js files must have( in particular knockout) .
And the mock idea is not solving the issue. You must test either manually , either with an automated test for browser(like Selenium) and testing explicitely in browser version! And I have speak only about IE, not Firefox and /or Chrome…
: Please read the requirements from http://msdn.microsoft.com/en-us/library/cc836459%28v=vs.85%29.aspx :
Starting with JScript 5.8, by default, the JScript scripting engine supports the language feature set as it existed in version 5.7. This is to maintain compatibility with the earlier versions of the engine. To use the complete language feature set of version 5.8, the Windows Script interface host has to invoke IActiveScriptProperty::SetProperty.
Internet Explorer 8 opts into the JScript 5.8 language features when the document mode for Internet Explorer 8 is “Internet Explorer 8 Standards” mode. For other document modes, Internet Explorer uses the version 5.7 feature set.