Hello fellow Coders,
I have a question about things like --
"use strict" , "console was used before it was defined" and other things. You can see in the image below.
As you can see at the bottom of image. [Editor: Brackets]
I had searched about it and It says It is used in ECMA 5.x of Js.
I also heard that there is Ecma 6/7 in market? good resources and suggestions would be helpful. Thank you : ))