ReactJS无法使用Ref回调获取类组件的Ref
我试图从父组件获取子组件类组件的引用,我面临两个问题:ReactJS无法使用Ref回调获取类组件的Ref,reactjs,preact,react-ref,Reactjs,Preact,React Ref,我试图从父组件获取子组件类组件的引用,我面临两个问题: Parent component private childRef: RefObject<any> = React.createRef(); <Child ref={this.childRef} /> 将其包装在div中。尝试以下操作: 父组件 private childRef:ReObject=React.createRef; 你必须转发Ref const Child = React.forwardRef
Parent component
private childRef: RefObject<any> = React.createRef();
<Child ref={this.childRef} />
将其包装在div中。尝试以下操作: 父组件 private childRef:ReObject=React.createRef;
你必须转发Ref
const Child = React.forwardRef((props, ref) => (
<div ref={ref} >
....
</div>
))
ref不会自动从功能组件传递到它的DOM元素。因此,您必须手动传递它。关于它的更多信息Child看起来像什么?@Yatrix子组件是类组件:`class Child extensed React.component{}`
const Child = React.forwardRef((props, ref) => (
<div ref={ref} >
....
</div>
))