taro mapstate props方法

// Todo.js

function mapStateToProps(state, ownProps) {
  const { visibilityFilter } = state
  const { id } = ownProps
  const todo = getTodoById(state, id)

  // component receives additionally:
  return { todo, visibilityFilter }
}

// Later, in your application, a parent component renders:
;<ConnectedTodo id={123} />
// and your component receives props.id, props.todo, and props.visibilityFilter

function mapStateToProps(state) {
  return {
    a: 42,
    todos: state.todos,
    filter: state.visibilityFilter
  }
}

// component will receive: props.a, props.todos, and props.filter