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RippleButton react Code Snippet in 2024

componentsstateeffectintermediate

Last Updated: 10 April 2024

Renders a button that animates a ripple effect when clicked.

  • Use the useState() hook to create the coords and isRippling state variables. These are used for the pointer's coordinates and the animation state of the button respectively.
  • Use a useEffect() hook to change the value of isRippling every time the coords state variable changes, starting the animation.
  • Use setTimeout() in the previous hook to clear the animation after it's done playing.
  • Use a useEffect() hook to reset coords whenever the isRippling state variable is false.
  • Handle the onClick event by updating the coords state variable and calling the passed callback.
.ripple-button { border-radius: 4px; border: none; margin: 8px; padding: 14px 24px; background: #1976d2; color: #fff; overflow: hidden; position: relative; cursor: pointer; } .ripple-button > .ripple { width: 20px; height: 20px; position: absolute; background: #63a4ff; display: block; content: ""; border-radius: 9999px; opacity: 1; animation: 0.9s ease 1 forwards ripple-effect; } @keyframes ripple-effect { 0% { transform: scale(1); opacity: 1; } 50% { transform: scale(10); opacity: 0.375; } 100% { transform: scale(35); opacity: 0; } } .ripple-button > .content { position: relative; z-index: 2; }
const RippleButton = ({ children, onClick }) => { const [coords, setCoords] = React.useState({ x: -1, y: -1 }); const [isRippling, setIsRippling] = React.useState(false); React.useEffect(() => { if (coords.x !== -1 && coords.y !== -1) { setIsRippling(true); setTimeout(() => setIsRippling(false), 300); } else setIsRippling(false); }, [coords]); React.useEffect(() => { if (!isRippling) setCoords({ x: -1, y: -1 }); }, [isRippling]); return ( <button className="ripple-button" onClick={e => { const rect = e.target.getBoundingClientRect(); setCoords({ x: e.clientX - rect.left, y: e.clientY - rect.top }); onClick && onClick(e); }} > {isRippling ? ( <span className="ripple" style={{ left: coords.x, top: coords.y }} /> ) : ( '' )} <span className="content">{children}</span> </button> ); };
ReactDOM.render( <RippleButton onClick={e => console.log(e)}>Click me</RippleButton>, document.getElementById('root') );

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