Why Aren\'t My JavaScript Changes Affecting My CSS :root Variables?-CSS Tutorial-php.cn

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Why Aren\'t My JavaScript Changes Affecting My CSS :root Variables?

Linda Hamilton

Nov 30, 2024 am 05:24 AM

Why Aren't My JavaScript Changes Affecting My CSS :root Variables?

Changing CSS :root Color Variables with JavaScript

A user aims to implement a system that alters the theme of a webpage by adjusting color variables defined in the :root section of CSS. Despite implementing a JavaScript code to set the theme, no changes are observed.

The provided code attempts to change the --main-color variable, but it doesn't use the correct syntax. The correct way to modify :root variables in JavaScript is using the document.documentElement.style.setProperty() method. The following line should be added to the JavaScript code:

document.documentElement.style.setProperty('--main-color', '#YOURCOLOR');

Where #YOURCOLOR represents the desired color value. For example, to set the main color to blue, the following line should be used:

document.documentElement.style.setProperty('--main-color', '#0000FF');

By incorporating this line into the JavaScript code, the user will be able to change the :root color variables dynamically, allowing them to customize the theme of their webpage.

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