How do I detect IE 8 with jQuery?

Question

I need to detect not only the browser type but version as well using jQuery. Mostly I need to find out if it is IE 8 or not.

I am not sure if I am doing it correctly

Answer 1

document.documentMode is undefined if the browser is not IE8,

it returns 8 for standards mode and 7 for 'compatable to IE7'

If it is running as IE7 there are a lot of css and dom features that won't be supported.