How to remove my function after I go out of the section in scroll

[Али К]

lt.call(function () {
      
            $('.c1').addClass('opacityOpen2')
            $('.c2').addClass('opacityOpen3')
            $('.c3').addClass('opacityOpen4')
    })

even if used .add()
i will get the same result 

See the Pen gOwJyxr by itsalimanuel (@itsalimanuel) on CodePen

[ZachSaucier]

Hey Ali. What do you mean "remove my function after I go out of the section in scroll"? Is this timeline attached to a ScrollTrigger? Do you mean that you want this function to fire the first time the section is entered by not any other time? A minimal demo would greatly help us help you.

[Али К]

@ZachSaucier To post the code don't make any change , I mean , if I go out the section, the function will be off , and when I come back to the same section the function will be on again (it's like play on hover)

[GreenSock]

Like Zach, I'm a bit confused by your question. Are you saying that you want to CALL a specific function whenever you enter a section on scroll? Functions aren't "on" or "off" - they're just objects that can be invoked. 

 

If you want to call a specific function like that, sure, just use the onEnter and onEnterBack callbacks in a ScrollTrigger. It's all in the docs.