Rule: Do not use Internet Explorer's conditional comments

References: Google guidelines

title

Do not use Internet Explorer's conditional comments

description

Internet Explorer offers a way to change the JavaScript code at runtime using conditional comments (activated by a <code>@cc_on</code> statement found in a comment). Using this preprocessing feature decreases readability and maintainability, and can hinder automated tools. What's more, it is specific to Internet Explorer and won't work for other browsers.

Most of the time, using those conditional comments can be easily avoided with some refactoring - using modern cross-browsers JavaScript frameworks and libraries.

The following code snippet illustrates the use of conditional comments:

/*@cc_on
   /*@if (@_jscript_version >= 5)
      ... // some JavaScript 5 code
   @else @*/
      ... // some "old" JavaScript code
   /*@end
@*/

message

Refactor your code to avoid using Internet Explorer's conditional comments.

severity

Major

in Sonar way?

Yes