What is the process for taking the CSS content from a local CSS file and injecting it into a <style> tag?

Creating custom style content using the <style> tag with style.innerHTML can be done like this:

    let style = document.createElement("style");
    style.setAttribute("id", "raptors");
    style.innerHTML =
      ".puma {" +
      "color: purple;" +
      "font-size: 50px;" +
      "text-align: left;" +
      "}";

But what if you want to import styles from a local file like ./styles.css? You might try something like this:

styles.innerHTML = import `./styles.css`

I attempted a solution using fetch, but encountered some issues. Is there a better way to do this? Check out my code experiment here:

    let style = document.createElement("style");
    style.setAttribute("id", "test");
    async function loadCss() {
      try {
        const response = await fetch("./style.css");
        const css = await response.text();
        style.textContent = css;
      } catch (error) {
        console.error(error);
      }
    }
    loadCss();

Answer №1

If you opt out of creating a style tag, another method would be to generate a link tag and define its href:

let styleLink = document.createElement("link");
styleLink.setAttribute("rel", "stylesheet");
styleLink.setAttribute("href", "./styles.css");
document.head.appendChild(styleLink);

Related resource: https://css-tricks.com/why-isnt-it-style-src/

Answer №2

To implement the styling in your component, simply import the stylesheet and use the specified class name.

In Component.tsx or Component.js:

import "./Component.styles.css";

const Component = () => {
  return (
    <div className="myDiv">
      something
    </div>
  );
}

In Component.styles.css:

.myDiv {
 color: red;
}

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