IE 10 - HTML1423: Malformed start tag unlikely example

If you are getting this error in IE 10,
  
HTML1423: Malformed start tag. Attributes should be separated by whitespace, 

look at the code behind your page.

This bit of JavaScript code cause the above error.
alert("Say Hello to my li'l friend"); \\single quote, one cause 
This is now gone in new IE 11, even if you use dev tools(F12) to go back to 10.

Quotes Inspector

CHECK NOW for mismatched quotes