React. Animate SplitText of array element with binding to specific sections using scrollTrigger

[A1exxuss]

Hello everyone. I have an array with text, using position fixed in the upper right corner of the screen and when scrolling to the desired section, I need to show new text, hiding the old one with animation. I did this, but the problem arises that when changing the browser window, everything breaks. Help me with this, please, and how can I optimize this solution? This is a code snippet, because further it is the same (p.s. I don't use useGsap because it breaks animation in production deployment of NExtJS)
https://stackblitz.com/edit/stackblitz-starters-h6deec?file=app%2Fcomponent.tsx

const TEXTS_FOR_DESKTOP = [
    '2024',
    'Finance',
    'Reward',
    '2000',
    '2008',
    '2015',
    '2017',
    '2020',
    '2023',
]

  const titleRefs = useRef<(HTMLDivElement | null)[]>([])
    const translateToY = -150

  useEffect(() => {
    const mm = gsap.matchMedia();
    const splittedText = titleRefs.current.map(
      (item) => new SplitText(item, { type: "chars" })
    )
    mm.add(
      {
        isTablet: '(min-width: 834px) and (max-width: 1509px)',
        isDesktop: '(min-width: 1510px)',
        isExtraSmallMobile: '(max-width: 833px)',
    },
    ctx => {
        const {isDesktop, isTablet, isExtraSmallMobile} =
            ctx.conditions!

        if (isDesktop) {
          const groups: gsap.DOMTarget[] =
          gsap.utils.toArray('.trigger')

      splittedText.forEach((t, i) => {
          if (i > 0) {
              gsap.set((t as any).elements[0], {
                  yPercent: 150,
                  position: 'absolute',
                  top: 0,
                  left: 0,
                  width: '100%',
              })
          }
      })
      // 2024-finance
      gsap.timeline({
          scrollTrigger: {
              invalidateOnRefresh: true,
              trigger: groups[0],
              start: 'top top',
              id: `anim_${0}`,
              end: '+=260px',
              // markers: true,
              scrub: 1,
          },
      })
          .to(splittedText[0].chars, {
              yPercent: -300,
              ease: 'power2.in',
              duration: 2.5,
              stagger: {from: 'end', amount: 0.6},
          })
          .to(
              splittedText[1].chars,
              {
                  yPercent: translateToY,
                  ease: 'power2.in',
                  duration: 2.5,
                  stagger: {from: 'end', amount: 0.6},
              },
              '<-0.3'
          )

      // finance-reward
      gsap.timeline({
          scrollTrigger: {
              invalidateOnRefresh: true,
              trigger: groups[1], 
              start: 'center top',
              end: '+=500',
              id: `anim_${1}`,
              // markers: true,
              scrub: 1,
          },
      })
          .to(splittedText[1].chars, {
              yPercent: -300,
              ease: 'power2.in',
              duration: 2.5,
              stagger: {from: 'end', amount: 0.6},
          })
          .to(splittedText[2].chars, {
              yPercent: translateToY,
              ease: 'power2.in',
              duration: 2.5,
              stagger: {from: 'end', amount: 0.6},
              scrollTrigger: {
                  invalidateOnRefresh: true,
                  trigger: groups[1],
                  start: 'center top',
                  end: '+=500',
                  id: `anim_${1}`,
                  // markers: true,
                  scrub: 1,
              },
          })

      // reward-2000
      gsap.timeline({
          scrollTrigger: {
              invalidateOnRefresh: true,
              trigger: groups[2], 
              start: '-300 top',
              end: '+=200',
              id: `anim_${2}`,
              // markers: true,
              scrub: 1,
          },
      })
          .to(splittedText[2].chars, {
              yPercent: -300, 
              ease: 'power2.in',
              duration: 2.5,
              stagger: {from: 'end', amount: 0.6},
          })
          .to(splittedText[3].chars, {
              yPercent: translateToY,
              ease: 'power2.in',
              duration: 2.5,
              stagger: {from: 'end', amount: 0.6},
              scrollTrigger: {
                  invalidateOnRefresh: true,
                  trigger: groups[2],
                  start: '-300 top',
                  end: '+=200',
                  id: `anim_${2}`,
                  // markers: true,
                  scrub: 1,
              },
          })
        }
    }
    )

     
});

 <div className='fixed right-0 top-0 z-[-1] hidden h-[120px] w-full flex-col gap-[2px] overflow-hidden text-right uppercase 834:flex desktop:h-[200px]'>
                    {TEXTS_FOR_DESKTOP.map((text, index) => (
                        <div
                            key={index}
                            className={`fluid-text flex items-center justify-end gap-1 font-[500] 834:leading-none`}
                            ref={el => {
                                titleRefs.current[index] = el
                            }}
                        >
                            {text}
                        </div>
                    ))}
                </div>

[GSAP Helper]

Without a minimal demo, it's very difficult to troubleshoot; the issue could be caused by CSS, markup, a third party library, a 3rd party script, etc. Would you please provide a very simple CodePen or Stackblitz that illustrates the issue? 

 

Please don't include your whole project. Just some colored <div> elements and the GSAP code is best. See if you can recreate the issue with as few dependencies as possible. Start minimal and then incrementally add code bit by bit until it breaks. Usually people solve their own issues during this process! If not, at least we have a reduced test case which greatly increases your chances of getting a relevant answer.

 

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

that loads all the plugins. Just click "fork" at the bottom right and make your minimal demo: 

 

Using a framework/library like React, Vue, Next, etc.? 

CodePen isn't always ideal for these tools, so here are some Stackblitz starter templates that you can fork and import the gsap-trial NPM package for using any of the bonus plugins: 

• React (please read this article!)
• Next
• Svelte
• Sveltekit
• Vue
• Nuxt

 

Please share the StackBlitz link directly to the file in question (where you've put the GSAP code) so we don't need to hunt through all the files. 

 

Once we see an isolated demo, we'll do our best to jump in and help with your GSAP-specific questions. ✅

[GSAP Helper]

Hi there! I see you're using React -

Proper cleanup is very important with frameworks, but especially with React. React 18 runs in strict mode locally by default which causes your useEffect() and useLayoutEffect() to get called TWICE.

 

Since GSAP 3.12, we have the useGSAP() hook (the NPM package is here) that simplifies creating and cleaning up animations in React (including Next, Remix, etc). It's a drop-in replacement for useEffect()/useLayoutEffect(). All the GSAP-related objects (animations, ScrollTriggers, etc.) created while the function executes get collected and then reverted when the hook gets torn down.

 

Here is how it works:

const container = useRef(); // the root level element of your component (for scoping selector text which is optional)

useGSAP(() => {
  // gsap code here...
}, { dependencies: [endX], scope: container }); // config object offers maximum flexibility

Or if you prefer, you can use the same method signature as useEffect():

useGSAP(() => {
  // gsap code here...
}, [endX]); // simple dependency Array setup like useEffect()

This pattern follows React's best practices.

 

We strongly recommend reading the React guide we've put together at https://gsap.com/resources/React/

 

If you still need help, here's a React starter template that you can fork to create a minimal demo illustrating whatever issue you're running into. Post a link to your fork back here and we'd be happy to take a peek and answer any GSAP-related questions you have. Just use simple colored <div> elements in your demo; no need to recreate your whole project with client artwork, etc. The simpler the better. 

[A1exxuss]

7 hours ago, GSAP Helper said:

Without a minimal demo, it's very difficult to troubleshoot; the issue could be caused by CSS, markup, a third party library, a 3rd party script, etc. Would you please provide a very simple CodePen or Stackblitz that illustrates the issue? 

 

Please don't include your whole project. Just some colored <div> elements and the GSAP code is best. See if you can recreate the issue with as few dependencies as possible. Start minimal and then incrementally add code bit by bit until it breaks. Usually people solve their own issues during this process! If not, at least we have a reduced test case which greatly increases your chances of getting a relevant answer.

 

 

that loads all the plugins. Just click "fork" at the bottom right and make your minimal demo: 

 

 

Using a framework/library like React, Vue, Next, etc.? 

CodePen isn't always ideal for these tools, so here are some Stackblitz starter templates that you can fork and import the gsap-trial NPM package for using any of the bonus plugins: 

• React (please read this article!)
• Next
• Svelte
• Sveltekit
• Vue
• Nuxt

 

Please share the StackBlitz link directly to the file in question (where you've put the GSAP code) so we don't need to hunt through all the files. 

 

Once we see an isolated demo, we'll do our best to jump in and help with your GSAP-specific questions. ✅

7 hours ago, A1exxuss said:

Hello everyone. I have an array with text, using position fixed in the upper right corner of the screen and when scrolling to the desired section, I need to show new text, hiding the old one with animation. I did this, but the problem arises that when changing the browser window, everything breaks. Help me with this, please, and how can I optimize this solution? This is a code snippet, because further it is the same (p.s. I don't use useGsap because it breaks animation in production deployment of NExtJS)

const TEXTS_FOR_DESKTOP = [
    '2024',
    'Finance',
    'Reward',
    '2000',
    '2008',
    '2015',
    '2017',
    '2020',
    '2023',
]

  const titleRefs = useRef<(HTMLDivElement | null)[]>([])
    const translateToY = -150

  useEffect(() => {
    const mm = gsap.matchMedia();
    const splittedText = titleRefs.current.map(
      (item) => new SplitText(item, { type: "chars" })
    )
    mm.add(
      {
        isTablet: '(min-width: 834px) and (max-width: 1509px)',
        isDesktop: '(min-width: 1510px)',
        isExtraSmallMobile: '(max-width: 833px)',
    },
    ctx => {
        const {isDesktop, isTablet, isExtraSmallMobile} =
            ctx.conditions!

        if (isDesktop) {
          const groups: gsap.DOMTarget[] =
          gsap.utils.toArray('.trigger')

      splittedText.forEach((t, i) => {
          if (i > 0) {
              gsap.set((t as any).elements[0], {
                  yPercent: 150,
                  position: 'absolute',
                  top: 0,
                  left: 0,
                  width: '100%',
              })
          }
      })
      // 2024-finance
      gsap.timeline({
          scrollTrigger: {
              invalidateOnRefresh: true,
              trigger: groups[0],
              start: 'top top',
              id: `anim_${0}`,
              end: '+=260px',
              // markers: true,
              scrub: 1,
          },
      })
          .to(splittedText[0].chars, {
              yPercent: -300,
              ease: 'power2.in',
              duration: 2.5,
              stagger: {from: 'end', amount: 0.6},
          })
          .to(
              splittedText[1].chars,
              {
                  yPercent: translateToY,
                  ease: 'power2.in',
                  duration: 2.5,
                  stagger: {from: 'end', amount: 0.6},
              },
              '<-0.3'
          )

      // finance-reward
      gsap.timeline({
          scrollTrigger: {
              invalidateOnRefresh: true,
              trigger: groups[1], 
              start: 'center top',
              end: '+=500',
              id: `anim_${1}`,
              // markers: true,
              scrub: 1,
          },
      })
          .to(splittedText[1].chars, {
              yPercent: -300,
              ease: 'power2.in',
              duration: 2.5,
              stagger: {from: 'end', amount: 0.6},
          })
          .to(splittedText[2].chars, {
              yPercent: translateToY,
              ease: 'power2.in',
              duration: 2.5,
              stagger: {from: 'end', amount: 0.6},
              scrollTrigger: {
                  invalidateOnRefresh: true,
                  trigger: groups[1],
                  start: 'center top',
                  end: '+=500',
                  id: `anim_${1}`,
                  // markers: true,
                  scrub: 1,
              },
          })

      // reward-2000
      gsap.timeline({
          scrollTrigger: {
              invalidateOnRefresh: true,
              trigger: groups[2], 
              start: '-300 top',
              end: '+=200',
              id: `anim_${2}`,
              // markers: true,
              scrub: 1,
          },
      })
          .to(splittedText[2].chars, {
              yPercent: -300, 
              ease: 'power2.in',
              duration: 2.5,
              stagger: {from: 'end', amount: 0.6},
          })
          .to(splittedText[3].chars, {
              yPercent: translateToY,
              ease: 'power2.in',
              duration: 2.5,
              stagger: {from: 'end', amount: 0.6},
              scrollTrigger: {
                  invalidateOnRefresh: true,
                  trigger: groups[2],
                  start: '-300 top',
                  end: '+=200',
                  id: `anim_${2}`,
                  // markers: true,
                  scrub: 1,
              },
          })
        }
    }
    )

     
});

 <div className='fixed right-0 top-0 z-[-1] hidden h-[120px] w-full flex-col gap-[2px] overflow-hidden text-right uppercase 834:flex desktop:h-[200px]'>
                    {TEXTS_FOR_DESKTOP.map((text, index) => (
                        <div
                            key={index}
                            className={`fluid-text flex items-center justify-end gap-1 font-[500] 834:leading-none`}
                            ref={el => {
                                titleRefs.current[index] = el
                            }}
                        >
                            {text}
                        </div>
                    ))}
                </div>

https://stackblitz.com/edit/stackblitz-starters-h6deec?file=app%2Fcomponent.tsx
Here's an example. When resizing a window, animations break.

[Rodrigo]

Hi,

 

As suggested you should use our useGSAP hook for React projects:

https://gsap.com/resources/React

 

Here is a demo that uses GSAP MatchMedia in combination with the useGSAP hook:

https://stackblitz.com/edit/vitejs-vite-pfhzkf?file=src%2FApp.jsx

 

Hopefully this helps

Happy Tweening!

[A1exxuss]

18 minutes ago, Rodrigo said:

Hi,

 

As suggested you should use our useGSAP hook for React projects:

https://gsap.com/resources/React

 

Here is a demo that uses GSAP MatchMedia in combination with the useGSAP hook:

https://stackblitz.com/edit/vitejs-vite-pfhzkf?file=src%2FApp.jsx

 

Hopefully this helps

Happy Tweening!

Adding useGSAP it breaks my elements splitText layout

[Rodrigo]

Hi,

 

There has to be something else in your project that is causing that problem. I can't think of a single reason why useGSAP could have that effect . Most definitely you don't need to revert all those instances, useGSAP does it for you and MatchMedia would do it in your case, since MatchMedia is a GSAP Context with responsive super powers.

 

Is worth mentioning that useGSAP is just a drop-in replacement for useEffect/useLayoutEffect since it uses those hooks internally, just that. We're not running our own hook or anything like it, just simplifying the usage of useEffect/useLayoutEffect for our users.

 

In this demo everything seems to be working without any issues:

https://stackblitz.com/edit/vitejs-vite-zmobkc?file=src%2Findex.css,src%2FApp.jsx&terminal=dev

 

Hopefully this helps

Happy Tweening!