Sometimes, we want to add transitions to React styled components with JavaScript.

In this article, we’ll look at how to add transitions to React styled components with JavaScript.

How to add transitions to React styled components with JavaScript?

To add transitions to React styled components with JavaScript, we can change styles according to props.

For instance, we write:

import React from "react";
import styled, { css } from "styled-components";

const Button = styled.div`
  transform: rotate(0deg);
  transition: transform 0.2s ease-out;
  background: green;
  width: 50px;
  ${(props) =>
    props.expanded &&
    css`
      transform: rotate(45deg);
    `};
`;

export default function App() {
  const [expanded, setExpanded] = React.useState();

  React.useEffect(() => {
    setTimeout(() => {
      setExpanded(true);
    }, 2000);
  }, []);

  return <Button expanded={expanded}>hello</Button>;
}

to create a styled div and assign it to Button.

In it, we set the transform property to rotate the div according to the value of the expanded prop.

Then in App, we have the expanded state that’s set as the value of the expanded prop.

And we call setExpanded in the setTimeout callback 2 seconds after App is mounted.

Conclusion

To add transitions to React styled components with JavaScript, we can change styles according to props.