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Learned how to change the background color of a React function component randomly

pradeepradyumna profile image Pradeep Pradyumna Updated on ・1 min read

Currently, I'm working on a web app using React JS and it has a lot of functional components that I render selectively when required. I have defined styles for almost every component in my App.css file. But, I wanted one of my components to change its background color randomly every time it loads. I wasn't sure of the JS syntax and when I looked upon the internet I didn't get the exact syntax I was looking for.

After some trial and error, I finally cracked a syntax and it worked! So, I thought of sharing with the community here. 😁

import React from "react";

function MyComponent({ name }) {
  // I found this formula
  // here: https://css-tricks.com/snippets/javascript/random-hex-color/
  let randomColor = Math.floor(Math.random() * 16777215).toString(16);

  // The trouble I had was about how to use
  // the variable randomColor in "style:{}" tag
  return (
    <div className="parent-container">
      <div
        className="child-container"
        style={{ backgroundColor: "#" + `${randomColor}` }}
      >
        <h4 className="name">{name}</h4>
      </div>
    </div>
  );
}

export default MyComponent;
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I'm not sure if this the only way of doing it. But if there are any other ways too, pls share them in the comments. I would be happy to learn!

Thanks for reading! 

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