注意:①需使用hooks函数组件 ②使用了antDesign组件库(可不用)
如何使用
父组件代码
javascript
import React, { useState, useRef, useEffect } from 'react';
import { Button } from 'antd';
import Child from './components/child';
export default () => {
const childRef = useRef();
//使用ref调用子组件的方法
const handleOpen = () => {
childRef.current.showModal('Hello word');
};
return (
<div>
<Button type="primary" onClick={handleOpen}>
点我
</Button>
<Child ref={childRef} />
</div>
);
};
子组件代码
javascript
import React, { useImperativeHandle, forwardRef, useState, useRef, useEffect } from 'react';
import { Modal } from 'antd';
const ChildComponent = forwardRef((props, ref) => {
const [isModalOpen, setIsModalOpen] = useState(false);
const [data, setData] = useState('');
//弹框打开
const showModal = async (data) => {
setIsModalOpen(true);
setData(data);
};
//弹框确定
const handleOk = async () => {
setIsModalOpen(false);
};
//弹框取消
const handleCancel = () => {
setIsModalOpen(false);
};
// 通过第二个参数ref来控制暴露哪些方法
useImperativeHandle(ref, () => ({
showModal,
}));
return (
<div>
<Modal title="子组件" width={800} open={isModalOpen} onOk={handleOk} onCancel={handleCancel}>
<div>{data}</div>
</Modal>
</div>
);
});
export default ChildComponent;
注:本人前端小白 ,如有不对的地方还请多多指教