on screen resize from large devices to mobile why some lines didn't animate if i refresh then it works fine?

[iqbal farooq]

here i s DEMO i need to animate the text having gradient effect i cant break words using any plugin then i wont get the same colour which i am getting here but it has a one issue on resize sometimes it didn't animate all the lines if i come from large device to mobile can anyone help me out here 

Edited September 2, 2025 by iqbal farooq
DEMO added

[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 GSAP as shown in the Install Helper in our Learning Center : 

• 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. ✅

[iqbal farooq]

here is the DEMO but some times it works fine some times when i come from large device to  small device it  didn't animate all lines 

[Rodrigo]

Hi,

 

Just use invalidateOnRefresh in your ScrollTrigger config:

https://gsap.com/docs/v3/Plugins/ScrollTrigger/#invalidateOnRefresh

 

This seems to work in your demo:

const timeline = gsap.timeline({
  scrollTrigger: {
    trigger: animationRefrence.current,
    start: getStartPosition(conditions),
    end: getEndPosition(conditions),
    invalidateOnRefresh: true,
    markers: true,
    scrub: true,
  },
});

Here is a fork of your demo:

https://stackblitz.com/edit/stackblitz-starters-yj2pla8l?file=app%2Fpage.tsx

 

Hopefully this helps

Happy Tweening!