Is IE10(+) identical on Windows 7 and Windows 8?

I am developing on OS X. For testing I am using VirtualBox with windows VMs from http://www.modern.ie/en-us/virtualization-tools#downloads

When testing my web applications, should I be testing in IE10 on both Win7 and Win8, or can I safely assume that IE10 behaves identically on both platforms and only test on Win7? And the same question goes for IE11.

回答1:

No, they are not identical, but they should be the same for the common features that both support. IE10 and 11 on Windows 8 and 8.1 support a number of extra features that are not included on Windows 8. They mostly relate to touch and device hardware support. Windows 8.* is a touch friendly OS while Win7 is a more traditional OS that does not include robust touch support.

Differences in IE10 for Windows 7:

The "Touch" token is never included in the UA string
Gesture DOM events are not fired.
Scroll, Scrolling Snap Points, and Zooming CSS properties are not supported
touch-action CSS property is not supported
msMaxTouchPoints returns 0

More details can be found in the IE10 developer guide

Additionally the following are not supported in IE10 for Xbox One:

Geolocation API
prompt() method
Copy/Paste with JavaScript
File API

More details can be found in the Internet Explorer for Xbox One Developer Guide

Differences in IE11 for Windows 7:

Device Orientation events are not supported
Touch is not supported for HTML5 Drag and Drop
Encrypted Media Extensions (DRM) is not supported
High DPI is not supported (except the devicePixelRatio property)
No Link highlighting
No Media Source Extensions (media streaming, inc. MPEG Dash)
Doesn’t support automatic phone number detection (converts phone like numbers into clickable link)
No support for Screen Orientation API
No support for SPDY protocol

More details can be found in the IE11 developer guide

回答2:

Please visit Microsoft IE 10 Dev Guide:

IE Guide: