Uncaught TypeError: Cannot read property 'props' of undefined in react-redux

Question

当我尝试在 react-redux 中更改状态的道具时出现错误 Uncaught TypeError: Cannot read property 'props' of undefined，这是我要更改的代码：

class Home extends Component {
  componentWillMount(){
    this.props.fetchMatches();
  }

  handleChange(newDateRange){
    this.props.fetchMatches({
      ...this.props,
      startDate: newDateRange[0],
      endDate: newDateRange[1]
    })
  }

Answer 1

执行以下操作：

handleChange = (newDateRange) => {
    this.props.fetchMatches({
      ...this.props,
      startDate: newDateRange[0],
      endDate: newDateRange[1]
    })
  }

或在构造函数中，执行

constructor(){
    super(props);
    this.handleChange = this.handleChange.bind(this);
}

在 handleChange 中找不到 context，因此 this 未定义。您必须显式绑定 this 或使用 arrow function

Uncaught TypeError: Cannot read property 'props' of undefined in react-redux

Uncaught TypeError: Cannot read property 'props' of undefined in react-redux

javascript

reactjs

redux-thunk

react-redux