javascript usage in html tag

 

This question already has an answer here:

  • What is the purpose of the HTML “no-js” class? 6 answers

    • There is no JavaScript there.

    Those are conditional comments: a hack supported by old versions of IE that misapplied HTML's comment syntax to do browser detection.

    Further reading:

  • wikipedia
  • quirks mode
  • msdn
    • 链接地址: http://www.djcxy.com/p/96870.html

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