The shortest JS to determine whether it is IE6 (IE writing method)

Commonly used JavaScript code to detect which version of IE the browser is, including whether it is the most extremely hated IE6 identification and detection.

Then there is a slightly shorter js method to determine whether it is IE:
This seems to use the conditional compilation (or conditional comment) unique to JScript in IE to distinguish IE from non-IE (the IE/non-IE here refers to the kernel, and browsers with IE as the kernel will be regarded as IE)

The shortest js code to judge IE or non-IE is only 7 bytes:

In January 2010, a Russian took advantage of the difference between IE and standard browsers in processing array toString methods and perfectly completed the IE browser detection with only 6 bytes:

Using these findings, we can write code that is shorter. Now, the detection of whether it is IE6 can actually be written as:

The previous long and cumbersome analysis of navigator and the regular comparison method, the following JS method is more efficient!