How can I use CSS variables in JavaScript?

How can I use CSS variables in JavaScript?

You can access CSS variables in JavaScript using the getComputedStyle method. For example, you can get a variable like this: const root = document.documentElement; const value = getComputedStyle(root).getPropertyValue('--my-variable');

Can I change the value of a CSS variable using JavaScript?

Yes, you can change the value of a CSS variable by setting it directly on the style property of an element. For example: root.style.setProperty('--my-variable', 'new-value');

Are there any browser compatibility issues with CSS variables?

CSS variables are supported in all modern browsers, but they are not supported in Internet Explorer. Always check compatibility if you need to support older browsers.

What are some use cases for CSS variables in JavaScript?

CSS variables are great for theming, responsive design, and dynamic styling. You can easily change styles based on user interactions or conditions.