error

[react] Warning: Function components cannot be given refs. Attempts to access this ref will fail. Did you mean to use React.forwardRef()?

question

如果父组件包含子组件，useRef不能直接用在子组件上，控制台会报错
Warning: Function components cannot be given refs. Attempts to access this ref will fail. Did you mean to use React.forwardRef()?

solution

如果希望修改子组件html元素，则使用将函数组件通过用forwradRef包装。父组件中创建的ref转发进子组件
如果希望调用子组件方法，则使用useImperativeHandle，只暴露出父组件需要的方法