Variable Example

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posted 12 years ago

Hi again, I'm still confused about variables, so I've knocked up this
HTML page to show you what I don't understand

So we can see XXX is declared in initAll(), so it is local,
but when clicking on the link... "123" is displayed in the alert.
So the function display() is using the XXX variable from the initAll()
function.
I thought this would give an error.
Can you explain why not?

Thanks

Christophe Verré

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posted 12 years ago

?? Which browser are you using ?

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colin shuker

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posted 12 years ago

I'm using netbeans 3.6 with Internet Explorer 6(I think its 6, the one that comes with XP)

Bear Bibeault

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posted 12 years ago

When you don't use var, variables are created on the window object. So once they are created inside the body of a function, they are available from that point on.

Run the following:

[ March 08, 2006: Message edited by: Bear Bibeault ]

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Christophe Verré

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posted 12 years ago

When I try Colin's code, I do get a javascript error. (IE6)
Do you know why ?

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Christophe Verré

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posted 12 years ago

oops sorry, I noticed that I've left onload with two 'll' (onlload)

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Variable Example

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