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jQuery .animate() not functioning as expected with custom easing function in mobile browsers

๐Ÿ‘€ Views: 3 ๐Ÿ’ฌ Answers: 1 ๐Ÿ“… Created: 2025-06-08
jquery animations mobile easing JavaScript

Can someone help me understand I've been working on this all day and I'm experimenting with I'm sure I'm missing something obvious here, but I am trying to implement a smooth scrolling effect using jQuery's `.animate()` method with a custom easing function, but it seems to behave inconsistently on mobile browsers... The animation works perfectly on desktop browsers, but on mobile, it either runs too fast or doesnโ€™t complete at all. Here's the code I am using: ```javascript $(document).ready(function() { $('#scrollButton').on('click', function(e) { e.preventDefault(); $('html, body').animate({ scrollTop: $('#targetSection').offset().top }, { duration: 1000, easing: 'customEasingFunction' }); }); }); $.easing.customEasingFunction = function (x) { return x < 0.5 ? 2 * x * x : -1 + (4 - 2 * x) * x; }; ``` I've confirmed that my custom easing function is defined correctly and seems to work fine on Chrome and Firefox on desktop. However, when testing on mobile (both iOS Safari and Android Chrome), I notice that the scrolling ends prematurely or the duration feels inconsistent. I've also tried adjusting the duration to see if that might help, but it doesnโ€™t make a difference. I even tested removing the custom easing function and used the default easing, and while it works, I really need that custom effect for my project. I checked for jQuery version compatibility and confirmed I am using jQuery 3.6.0. Is there something specific about how mobile browsers handle animations or easing functions that I should be aware of? Any suggestions on how to troubleshoot or fix this issue would be greatly appreciated! I'm working on a CLI tool that needs to handle this. Any ideas what could be causing this? I'm working on a API that needs to handle this. Any ideas what could be causing this? Is there a better approach? For reference, this is a production microservice. Is there a simpler solution I'm overlooking? This is my first time working with Javascript latest. What am I doing wrong? This is for a REST API running on Ubuntu 20.04.