使用react的hooks怎么改写下面这段代码:class APP extends React.Component { constructor(props) { super(props); this.player = null } componentDidMount(){ var asse = '1', player=new EZUIKit.EZUIKitPlayer({width:600}) window.player = this.player; } fullScreent=()=>{ this.player.fullScreent(); } render(){ return ( <div> <button onClick={()=> this.fullScreent()}>开始</button> <div> ) } } export default APP;
时间: 2024-04-13 08:30:06 浏览: 126
使用React的Hooks,你可以将上面的代码改写为函数组件。下面是改写后的代码:
```jsx
import React, { useEffect, useRef } from 'react';
import EZUIKit from 'ezuikit-js';
function APP() {
const playerRef = useRef(null);
useEffect(() => {
const player = new EZUIKit.EZUIKitPlayer({ width: 600 });
playerRef.current = player;
window.player = playerRef.current;
}, []);
const fullScreent = () => {
playerRef.current.fullScreent();
};
return (
<div>
<button onClick={fullScreent}>开始</button>
<div></div>
</div>
);
}
export default APP;
```
在函数组件中,我们使用了`useRef`来创建一个引用`playerRef`,它将被用于保存`player`实例的引用。在`useEffect`钩子中,我们创建了一个名为player的EZUIKitPlayer实例,并将其赋值给playerRef.current和window.player。`fullScreent`函数用于触发全屏播放,我们仍然使用`playerRef.current`来调用它。按钮的点击事件直接绑定到`fullScreent`函数上。
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