Run results for: callback vs instance method

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:77.0) Gecko/20100101 Firefox/77.0

Browser: Firefox 77

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
instance method	96347256.0 Ops/sec
callback	111812848.0 Ops/sec

Script Preparation code:

const _onSuccess = () => {
    return {
        a: "something",
        b: "something else"
    }
}

const upload = (successCb) => {
    return successCb()
}

const onClick = () => {
    return upload(_onSuccess)
}

const onClickCb = () => {
    const onSuccess = () => {
        return {
            a: "something",
            b: "something else"
        }
    }

    return upload(onSuccess)
}

window.onClick = onClick
window.onClickCb = onClickCb

Tests:

instance method
onClick()
callback
onClickCb()