I'm using :root
to create some CSS variables. Is it possible to create them with JavaScript instead of CSS? Below is a simple example:
<div id="container"></div>
:root {
--first-color: #000;
--second-color: #666666;
}
#container {
background-color: --second-color;
width: 90px;
height: 90px;
}
Yes, you can do it via .setProperty() method:
const root = document.documentElement; root.style.setProperty('--first-color', 'red'); root.style.setProperty('--second-color', 'blue');
p { color: var(--first-color); } div { color: var(--second-color); }
<p>First color</p> <div>Second color</div>
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