I have 2 css files: light.css and dark.css, also have a ThemeSwitch component which represents the select element, this element has handler for handling change of value (the value is either light or dark). The question is: is there any way to include one of these css files according to the ThemeSwitch value: if value is light - import/include light.css, if value is dark - then import/include dark.css (like a theme switcher)
You can use react-lazy or react-suspense libraries for conditionally changing components or CSS files.
Below is the example of react-lazy library
import React, { useLayoutEffect, useState } from "react";
const Theme1 = React.lazy(() => import("./Theme1"));
const Theme2 = React.lazy(() => import("./Theme2"));
const THEME_1 = "1";
const THEME_2 = "2";
export const ThemeSelector = ({ children }) => {
const [theme, setTheme] = useState(null);
const changeTheme = () => {
debugger;
setTheme(theme === "1" ? "2" : "1");
};
useLayoutEffect(() => {
setTimeout(() => {
if (theme !== THEME_2) {
setTheme(THEME_2);
} else {
setTheme(THEME_1);
}
}, 5000);
}, []);
return (
<>
<React.Suspense fallback={<></>}>
{theme === "1" && <Theme1 />}
{theme === "2" && <Theme2 />}
</React.Suspense>
<button type="checkbox" value={theme} onClick={changeTheme}>Change Theme</button>
{children}
</>
);
};