QML function with optional parameters?

I want to know if is possible to use optional parameters in a QML function.

I tried:

Code:

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function danger(header, small, closeable = true) {
        setAlert(header, small, closeable)
    }

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error: Syntax Error on closeable =

I think JavaScript lacks the notion of a default value for function arguments, but you can probably do something like this

Code:

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setAlert(header, small, (typeof closeable !== 'undefined' ? closeable : true));

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Cheers,
_

Or a shorthand of:

Code:

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setAlert(header, small, closeable !== undefined ? closeable : true)

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