how to trigger an event while scrolling in wix

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1

I am making a single page website using anchor page. I want an image element to be faded out while scrolling down and again I want the image on the screen while I scroll up with fade In animation.
Please help me regarding this problem.

Thank you.
#easy #to #follow #topics .

2

Just use onViewport and EffectOptions.
https://www.wix.com/corvid/reference/$w.ViewportMixin.html
https://www.wix.com/corvid/reference/$w.EffectOptions.html