如何使用makestyles（）在MaterialUI中应用自定义动画效果@keyframes

Question

我学会了使用@keyframe在CSS中使用动画。但是我想将我的自定义动画代码编写到我的React项目中（使用materialUI）。我的挑战是如何在MaterialUI中使用makeStyle（）编写JavaScript代码以自定义动画。我希望这次可以在materialUI中按百分比自定义过渡过程。我需要能够在makeStyle（）中编写这样的代码，但我似乎不知道该怎么做。

@keyframes myEffect {

 0%{

  opacity:0;

  transform: translateY(-200%);

 }



100% {

  opacity:1;

  transform: translateY(0);

 }

}

Answer 1

这是一个示例，演示了其中的keyframes语法makeStyles：

import React from "react";
import ReactDOM from "react-dom";

import { makeStyles } from "@material-ui/core/styles";
import Button from "@material-ui/core/Button";
import clsx from "clsx";

const useStyles = makeStyles(theme => ({
  animatedItem: {
    animation: `$myEffect 3000ms ${theme.transitions.easing.easeInOut}`
  },
  animatedItemExiting: {
    animation: `$myEffectExit 3000ms ${theme.transitions.easing.easeInOut}`,
    opacity: 0,
    transform: "translateY(-200%)"
  },
  "@keyframes myEffect": {
    "0%": {
      opacity: 0,
      transform: "translateY(-200%)"
    },
    "100%": {
      opacity: 1,
      transform: "translateY(0)"
    }
  },
  "@keyframes myEffectExit": {
    "0%": {
      opacity: 1,
      transform: "translateY(0)"
    },
    "100%": {
      opacity: 0,
      transform: "translateY(-200%)"
    }
  }
}));

function App() {
  const classes = useStyles();
  const [exit, setExit] = React.useState(false);
  return (
    <>
      <div
        className={clsx(classes.animatedItem, {
          [classes.animatedItemExiting]: exit
        })}
      >
        <h1>Hello CodeSandbox</h1>
        <h2>Start editing to see some magic happen!</h2>
        <Button onClick={() => setExit(true)}>Click to exit</Button>
      </div>
      {exit && <Button onClick={() => setExit(false)}>Click to enter</Button>}
    </>
  );
}

const rootElement = document.getElementById("root");
ReactDOM.render(<App />, rootElement);

文档：https :
//cssinjs.org/jss-syntax/?v=v10.0.0#keyframes-
animation