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I’ve seen this method of detecting IE in several online examples:
if (/*@cc_on!@*/false) { // check for Internet Explorer
Is this similar to the conditional comments IE recognizes in HTML?
This statement controls conditional compilation of comment contents in IE. If IE sees this comment, it actually compiles the contents of comment blocks as pure code. Now the trick happens with the
!in the comment.IE compiles the
!as if it were written into source so it handles the code asif (!false), while all other browsers treat it asif (false).