The whole point of having two sets of comparitors (=== and == in this instance) is that you can use the correct one for any given circumstance. Proscribing the use of one in favour of the other is just woolly thinking.

Yes but in most of the cases it's better to use === operators. I mean, they both are correct. It's just a matter of style

This is almost always the case to help avoid type coercion where one does not want it.

Agreed, here are more JS styles that might be interesting for you: http://codingstyleguide.com/lang/6/javascript