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jQuery .fadeIn() optimization guide as expected when combined with CSS transitions for a smooth effect

πŸ‘€ Views: 28 πŸ’¬ Answers: 1 πŸ“… Created: 2025-07-03
jquery css fadeIn animations JavaScript

I'm migrating some code and I need help solving I'm working on a project and hit a roadblock..... I've looked through the documentation and I'm still confused about I'm trying to create a fade-in effect using jQuery's `.fadeIn()` method on an element that also has CSS transitions applied. The goal is to have the element fade in smoothly while simultaneously expanding its width from 0 to its full size. Here's the code I've written: ```html <div id="myElement" style="display:none; width: 100px; transition: width 2s;"></div> <button id="fadeButton">Fade In</button> ``` ```javascript $(document).ready(function() { $('#fadeButton').click(function() { $('#myElement').css('width', '100px').fadeIn(2000); }); }); ``` The question I'm working with is that the fade-in effect doesn't seem to play nicely with the CSS transition. When I click the button, the element fades in, but it appears instantly at its full width without the smooth transition. I expected that the width would gradually change while also fading in. I’ve tried using `.css('display', 'block')` before calling `.fadeIn()` to see if it would help, but that doesn’t change anything. I've also checked if there's a conflict with other CSS rules, but everything looks fine in the inspector. I’m using jQuery version 3.6.0 and testing this in the latest version of Chrome. Is there a better way to handle this effect, or am I missing something in how these two animations are executed together? Any insights would be greatly appreciated! What's the correct way to implement this? Am I missing something obvious? Is this even possible? I'm working in a Linux environment. Any advice would be much appreciated.