How can I accurately determine when Lottie Animations on a Webflow page are fully loaded and ready to be displayed? I have tried using the window.load() event with JavaScript, but it fires before the .json files are finished downloading. I need a solution to create a preloader that disappears when the Lottie animation is loaded and displayed on my website.

TL;DR
  • Use the lottie-web library and attach event listeners to detect the completion of Lottie animation loading.
  • Create a preloader element, and hide it using the "DOMLoaded" event from the Lottie instance once the animation is loaded.
  • Test the functionality across different browsers to ensure consistent behavior.

Ensuring that Lottie Animations on a Webflow page are fully loaded before they are displayed can indeed be challenging. Here's a solution to help you create a preloader that disappears only when the animation is ready.

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1. Use lottie-web Library

  • Include the lottie-web library in your Webflow project to manage Lottie animations effectively.
  • You can link it in your Webflow project settings or embed it in your custom code using a CDN like https://unpkg.com/@lottiefiles/lottie-player.

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2. Detect Completion of Lottie Animation Loading

  • Attach event listeners to the Lottie animation instance. The lottie-web library provides events like "DOMLoaded" or "complete", which you can use to track when an animation is fully loaded.

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3. Implement Preloader Logic

  • Create a preloader element that will be visible by default.
  • Use the "DOMLoaded" event from the Lottie instance to hide the preloader when the animation has successfully loaded.
  • Example JavaScript snippet (no inline code block):

   - Grab your Lottie container: var lottieContainer = document.getElementById('your-lottie-container-id');

   - Listen for the event: lottieContainer.addEventListener('DOMLoaded', function() { / Hide preloader / });

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4. Synchronize Animation and Preloader

  • Ensure your preloader element is hidden only after the Lottie animation's "DOMLoaded" event triggers.
  • Make sure the Lottie animations are not set to autoplay unless intended.

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5. Test Across Different Browsers

  • Different browsers might handle script loading differently, so test the animation and preloader functionality thoroughly across popular browsers like Chrome, Firefox, and Safari to ensure consistent behavior.

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Summary

You can accurately determine when Lottie Animations are loaded by using the lottie-web library's event listeners to detect when the animation is ready. By listening to the "DOMLoaded" event on your Lottie container, you can effectively manage a preloader that only disappears when the animation is completely loaded. This approach ensures a smooth user experience, as animations will only display once they are fully ready.

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