Creating a simple animation in React-Pose

Question

I'm having trouble creating a simple animation in React-Pose. The two problems are

1) I can't get the animation to revert to the initial condition. The hovering variable is changing to false when the mouse leaves, but it the animation doesn't change back.

2) I can't manipulate the animation, I wanted to have a longer duration and maybe an ease out or something, but its just an instant snap to the hovered status.

import React, { useState } from 'react';
import styled from 'styled-components';
import posed from 'react-pose';
import { render } from 'react-dom';

const UpFor = () => {

const [hovering, setHovering] = useState(false);

const HoverContainer = posed.div({
    hoverable: true
})

const Container = styled(HoverContainer)`
font-family: 'Baumans';
font-size: 220px;
display: flex;
cursor: pointer;
`

const Up = styled.div`
color: #81D6E3;`

const Four = styled.div`
color: #FF101F
`
const Fours = styled.div`
display: flex;
`
const MirroredFour = posed.div({
unhovered: {transform: 'rotatey(0deg)'},
hovered: {transform: 'rotateY(180deg)',
        transition: {
            type: 'tween',
            duration: '2s'
        }}
})

const SecondFour = styled(MirroredFour)`
color: #FF101F
position: absolute;
transform-origin: 67%;
`


return (
    <Container onMouseEnter={() => {setHovering({ hovering: true }), console.log(hovering)}}
               onMouseLeave={() => {setHovering({ hovering: false }), console.log(hovering)}}>
         <Up>Up</Up><Fours><Four>4</Four>
                <SecondFour pose={hovering ? "hovered" : "unhovered"}
                >4</SecondFour></Fours>
    </Container>)
}

export default UpFor

Answer 1

There were two main issues with your code:

1. duration does not appear to support string values like '2s'. I changed this to 2000.
2. You were defining your components (e.g. using styled.div, posed.div) inside of your render function. This caused these components to be treated by React as unique component types with each re-render. This results in those components being unmounted and re-mounted each render which prevents transitions from working since the element isn't changing -- instead it is being replaced by a new component of a different type.

Below is a working version of your code which moves the component definitions outside of the render (UpFor) function. You can play around with it in the sandbox provided.

import React, { useState } from "react";
import styled from "styled-components";
import posed from "react-pose";

const Container = styled.div`
  font-family: "Baumans";
  font-size: 220px;
  display: flex;
  cursor: pointer;
`;

const Up = styled.div`
  color: #81d6e3;
`;

const Four = styled.div`
  color: #ff101f;
`;
const Fours = styled.div`
  display: flex;
`;
const MirroredFour = posed.div({
  unhovered: { transform: "rotateY(0deg)" },
  hovered: {
    transform: "rotateY(180deg)",
    transition: {
      type: "tween",
      duration: 2000
    }
  }
});

const SecondFour = styled(MirroredFour)`
color: #FF101F
position: absolute;
transform-origin: 67%;
`;

const UpFor = () => {
  const [hovering, setHovering] = useState(false);

  console.log("hovering", hovering);
  return (
    <Container
      onMouseEnter={() => {
        setHovering(true);
      }}
      onMouseLeave={() => {
        setHovering(false);
      }}
    >
      <Up>Up</Up>
      <Fours>
        <Four>4</Four>
        <SecondFour pose={hovering ? "hovered" : "unhovered"}>4</SecondFour>
      </Fours>
    </Container>
  );
};

export default UpFor;