Maddening ReferenceError

Greetings!

I have a question which surrounds the use of .js in the context of the Firefox autoconfig scripting scheme. I don’t script every day, so I do hope my question isn’t too basic for the audience.

At any rate, here’s the code context which is showing up in various forms on the Browser Console:

(function() {
setInterval(toggle, 1000);
function toggle() {
… do something …
}
})();

When FF is launched, the console returns: “ReferenceError: setInterval is not defined”

Not to be dissuaded, I tried:

(function() {
window.setInterval(toggle, 1000);
function toggle() {
… do something …
}
})();

…and got back at the next run: “ReferenceError: window is not defined”

Sensing where this might be heading, I took a poke with:

(function() {
var t = window.setInterval(toggle, 1000);
function toggle() {
… do something …
}
})();

…and was reminded: “ReferenceError: window is not defined”

Finally, I tried:

(function() {
var t = setInterval(toggle, 1000);
function toggle() {
… do something …
}
})();

…and watched FF stick its tongue out at me again with: “ReferenceError: setInterval is not defined”

Of relevant note, this runs just fine:

(function() {
toggle();
function toggle() {
… do something …
}
})();

So, that’s my tale of woe in a nutshell…

Any help getting setInterval() to run as expected here is greatly appreciated 😉

Thanks!

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