Nothing here yet.
Nothing here yet.
If you see the code mentioned in this post on the top, that itself is a closure(the function b has access to var num that is outside the function b, which is also its lexical environment). What I meant by "combine all those functions (not one, but all)" is that, if you had many nested functions here like: function a ( ) { var num = 10 ; function b ( ) { var newNum = num + 5 ; console .log(newNum) function c ( ) { console .log(num) function d ( ) { console .log(num) } } } } each of these functions has its own lexical environment, right? And this whole code is called closure[ combine all the lexical environments, you get a closure]. As it is closure, all these functions will have access to var num, and also any variables declared in the global scope. I think that last line in my post is confusing. Will update it.