定义当前组件要使用哪一个context
const MyContext = React.createContext(defaultValue);class MyClass extends React.Component { componentDidMount() { let value = this.context; }}MyClass.contextType = MyContext;
定义当前组件要使用哪一个context
const MyContext = React.createContext(defaultValue);class MyClass extends React.Component { componentDidMount() { let value = this.context; }}MyClass.contextType = MyContext;名师互学网 版权所有 (c)2021-2022 ICP备案号：晋ICP备2021003244-6号
