changing css variable with javascript

Published: 16 July 2024
on channel: CodeMore
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sure! here is a step-by-step tutorial on how to change css variables using javascript:

step 1: create a css file with css variables


step 2: create an html file with an element that uses the css variables


step 3: create a javascript file to change the css variables


in this example, we have a css file (`styles.css`) defining two css variables `--main-color` and `--secondary-color`, and an html file (`index.html`) with an element using these variables.

when the button is clicked, the `changecolors` function in the javascript file (`script.js`) is executed. this function uses `document.documentelement.style.setproperty` to change the values of the css variables.

by changing the values of the css variables dynamically with javascript, you can update the styles of your website without having to modify the css directly. this approach offers flexibility and allows for more dynamic styling options in your web projects.

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