Re: Global variable not remembering value

On Jan 21, 5:08*pm, The Natural Philosopher <a...@b.c> wrote:

I am a javascript novice, but surely you need to tell the function
toggleDetail that det is GLOBAL in scope?

Declaring a var like that outside of any function makes it global.

Using the var keyword inside any function makes it local.

Skipping the var keyword altogether will also make it global.

In javascript you could declare and initialize a variable inside a
function like so:

function someFunction(){
det = false;
}

and det will be a global.

Doug Gunnoe wrote:

On Jan 21, 5:08�pm, The Natural Philosopher <a...@b.c> wrote:
I am a javascript novice, but surely you need to tell the function
toggleDetail that det is GLOBAL in scope?


Declaring a var like that outside of any function makes it global.

Using the var keyword inside any function makes it local.

Skipping the var keyword altogether will also make it global.

In javascript you could declare and initialize a variable inside a
function like so:

function someFunction(){
det = false;
}

and det will be a global.

Thanks for that.
I guess I should have remembered it all started as some sort of BASIC.
And would therefore break most of the rules of structured programming
before it got round to trying to add them all back again.

With C, there was one slim book, that almost completely defined the
language.

With Javascript, I have a book 4" thick that doesn't even really define
anything. Sigh.

On Jan 22, 6:41 am, The Natural Philosopher <a...@b.c> wrote:

Thanks for that.
I guess I should have remembered it all started as some sort of BASIC.
And would therefore break most of the rules of structured programming
before it got round to trying to add them all back again.

With C, there was one slim book, that almost completely defined the
language.

With Javascript, I have a book 4" thick that doesn't even really define
anything. Sigh.

JavaScript can be a pain in the ass at first.

I think it is a very intersting language once you get use to some of
its quirks.

The loose typing and automatic conversion of vars based on context was
an early pain for me. But now I like it.