Scrolltrigger start and mathmedia

[Ilyaz]

OHello, everybody!

 

I have a Scrolltrigger and start parameter something like this "top 50%". But on mobile devices this is to late. Can I via machmedia do  some conditions on start position? I honestly try to Google it but with no luck. Thank you!

[mvaneijgen]

Check out the docs https://gsap.com/docs/v3/GSAP/gsap.matchMedia()/

 

Hope it helps and happy tweening! 

[Ilyaz]

Thank you!  I read this docs. My question is can I do something like this for start parameter: isDesktop : "top 40%" ? "top 80%"

[mvaneijgen]

What have you tried already? We love to see what you can come up with, that way we can see your thought process and thus better help you understand the tools!

Here is a starter template which loads all the plugins, post back here with a minimal demo and someone will surely point you in the right direction. 

See the Pen aYYOdN by GreenSock (@GreenSock) on CodePen.

 

[Rodrigo]

On 2/14/2026 at 7:44 AM, Ilyaz said:

My question is can I do something like this for start parameter: isDesktop : "top 40%" ? "top 80%"

Absolutely! Just check the conditions syntax in the docs, create a simple demo in your local environment and experiment with ti:

https://gsap.com/docs/v3/GSAP/gsap.matchMedia()/#conditions

 

Happy Tweening!