CSS Custom Properties implementation guide After JavaScript Changes in Vue.js Component
I'm working on a project and hit a roadblock. I'm testing a new approach and I've been banging my head against this for hours. This might be a silly question, but I'm working with an scenario where CSS custom properties (variables) defined in a Vue.js component are not reflecting the changes made through JavaScript... I have a component where I'm trying to dynamically change the background color based on user input. I set a CSS variable in my styles like this: ```css :root { --dynamic-bg-color: blue; } .dynamic-box { background-color: var(--dynamic-bg-color); width: 200px; height: 200px; } ``` In the Vue component, I have a method that updates this variable: ```javascript methods: { updateColor(newColor) { document.documentElement.style.setProperty('--dynamic-bg-color', newColor); } } ``` However, when I call `updateColor('red')`, the background color of the `.dynamic-box` does not change as expected. I’ve verified that the method is being triggered correctly and that the new color value is being passed. I've also checked the styles in the browser's developer tools and confirmed that the CSS variable is being updated, but the visual change isn't applied. I've tried using Vue's `nextTick` to ensure that the DOM updates after the property change, but it still doesn't seem to work: ```javascript methods: { updateColor(newColor) { document.documentElement.style.setProperty('--dynamic-bg-color', newColor); this.$nextTick(() => { console.log('Color updated to:', getComputedStyle(document.documentElement).getPropertyValue('--dynamic-bg-color')); }); } } ``` Does anyone know why the visual change isn't being applied, and how I can resolve this scenario? I'm using Vue 3, and I've also cleared the cache and tested in different browsers, but the question continues. Thanks for any help! I'm working on a application that needs to handle this. Is there a better approach? This is part of a larger web app I'm building. Any ideas what could be causing this? This issue appeared after updating to Javascript 3.9. Any suggestions would be helpful. I'd be grateful for any help.