React（八）CSS

class App extends Component {
  constructor(props) {
    super(props);
    this.state = {date: new Date()};
  }

  render() {
    const styleCss = {
      header : {
        color: ‘red‘,
        backgroundColor: ‘#ccc‘,
        "padding-top": ‘20px‘,
        paddingBottom: ‘20px‘
      }
    }

    return (
      <div className="App">
        <p style={styleCss.header}>这是一段文字，哈哈</p>
      </div>
    );
  }
}

class App extends Component {
  constructor () {
    super();
    this.state = {
      minHeader: false
    };
  };

  switchHeader () {
    this.setState({
      minHeader:!this.state.minHeader
    })
  }

  render() {
    const styleCss = {
      header: {
        cursor: ‘pointer‘,
        backgroundColor: ‘red‘,
        color: ‘#fff‘,
        padding: (this.state.minHeader) ? ‘10px‘ : ‘30px‘
      }
    };
    return (
      <div className="App">
        <p style={styleCss.header} onClick={this.switchHeader.bind(this)}>这是一段文字，哈哈</p>
      </div>
    );
  }
}

import ‘./style/style.css‘ //创建的css文件

class App extends Component {
  render() {
    return (
      <div>
        <p className="blueColor">这是一段文字，哈哈</p>
      </div>
    );
  }
}