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Polished CSS Transitions

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Challenge #1 of 1

Q:
In Turbo Drive, how can we tell when a page is a preview or a freshly downloaded page?

document.body.hasAttribute('data-turbo-preview');

document.querySelector('body').hasAttribute('data-turbo-preview');

document.documentElement.hasAttribute('data-turbo-preview');

There is no way of differenciating between a preview and a real page in Turbo.