reactjs + styled-components with stateful component - 我的样式看不到道具

Question

为什么使用class/stateful组件时看不到道具：

const StyledTitle = styled.h1 `
  color: ${props => (props.primary ? "royalblue" : "black")};
`;

class Title extends Component {
  render() {
    return <StyledTitle > {
      this.props.children
    } < /StyledTitle>;
  }
}

const App = () => ( 
  <div>
    <Title>Hi, Alice!</Title>
    <Title primary>Hi Bob, you are awesome!</Title>
  </div>
);

这是 Styled-Components 的例子： Adapting based on props

演示：https://codesandbox.io/s/oxqz3o30w5

Answer 1

您没有将 primary 属性传递给样式化组件，因此它可以根据 primary 属性呈现逻辑。只需在组件声明中添加即可。

const StyledTitle = styled.h1 `
    color: ${props => (props.primary ? "royalblue" : "black")};
`;

class Title extends Component {
  render() {
    return <StyledTitle primary={this.props.primary}> {
      this.props.children
    } < /StyledTitle>;
  }
}

const App = () => ( 
  <div>
    <Title>Hi, Alice!</Title>
    <Title primary>Hi Bob, you are awesome!</Title>
  </div>
);

reactjs + styled-components with stateful component - 我的样式看不到道具

reactjs + styled-components with stateful component - my styles can't see props

javascript

reactjs

styled-components