Comments on: JavaScript block scoping

By: Bill Barry

Bill Barry — Sat, 27 Sep 2008 23:57:59 +0000

This is why you should always consider a good lint program:
like http://www.jslint.com/

Sergio Pereira — Sat, 27 Sep 2008 13:01:02 +0000

That book is nice indeed. It’s short and filled with valuable information. Great for anyone that does not remember why they hate “blocked script”

Scott — Sat, 27 Sep 2008 03:05:26 +0000

BLOCKED SCRIPT is even weirder than that. What do you think will be the value of myVar when you call the function?

function t()
{
alert(myVar);
var myVar = “scope”;
alert(myVar);
};

The first alert shows “undefined”. The second alert shows “myVar”.

Weird huh? No error when you try to access a variable that hasn’t been declared yet.

Jimmy Bogard — Sat, 27 Sep 2008 02:21:14 +0000

@Paul

You’re welcome.

Paul Batum — Fri, 26 Sep 2008 21:06:22 +0000

Jimmy you just cost me £114.66!!

The problem with Amazon is you never manage to check out with just one book in your basket..