how to put a variable in xul to a html page?

[Nero.Ping]

Hi, all:
I hope to put a variable in XUL to a special web page in my
extension. Just like the firebug put the console object to the page.
Then my page's js code can use some functions in the XUL.
But I don't konw how to do it. who can give me a solution?
thanks.

[Tei]

I don't understand, perhaps you have trought of simply embeding a
script tag, with the body code of the function, and I don't know why
this is not ok for you.

<script>
var foo = { bar: function () {} };
</script>

<button onclick="foo.bar()" />



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