REACT:CSS指针事件的解决方法:IE9中没有

Question

我很感谢在IE9中对我的React按钮组件实施解决方案的帮助。我使用此按钮提交表格。我将道具传递给按钮，并根据此道具的价值，该按钮将具有不同的样式。

我使用ComponentWillReceiveProps在收到新的道具值时更改状态和按钮的样式。

我在这里要实现的目标：submitstate是"然后允许点击。submistate是"加载"或"成功"，然后禁用单击按钮。

我遇到的问题是，我最终试图查询组件安装时不存在的选择器。我在这里做错了什么？如何使我的代码在下面工作？

class Button extends React.Component {
  constructor(props) {
    super(props);
    this.state = {
      submitState: this.props.buttonState,
      text: 'Click',
      textLoad: 'Loading',
      textSuccess: 'Success'
    }
    this.noclickLoad = this.noclickLoad.bind(this);
    this.noclickSuccess = this.noclickSuccess.bind(this);
  }
  loading () {
    this.setState({
      submitState: 'loading'
    });
  }
  success() {
    this.setState({
      submitState: 'success'
    });
  }
  disabled() {
    this.setState({
      submitState: 'disabled'
    });
  }
  nothing() {
    this.setState({
      submitState: ''
    })
  }
  noclickLoad() {
    document.querySelector('.myButtonContainer.loading .myButton').style.cursor = 'default';   
    document.querySelector('.myButtonContainer.loading .myButton').disabled = 'true';
  }
  noclickSuccess() {
    document.querySelector('.myButtonContainer.success .myButton').style.cursor = 'default';   
    document.querySelector('.myButtonContainer.success .myButton').disabled = 'true';
  }
  componentWillReceiveProps(nextProps) {
    if(nextProps.submitState === this.props.submitState) {
      return
    } 
    switch (nextProps.submitState) {
      case 'loading':
        this.loading();
        break;
      case 'success':
        this.success();
        break;
      case '': 
        this.nothing();
        break;
      default: 
        return
    }
  }
  componentDidMount () {
    window.addEventListener('load', this.noclickLoad);
    window.addEventListener('load', this.noclickSuccess);
  }
  render() {
    return (
      <div>
        <div className={`myButtonContainer ${this.state.submitState}`}>
          <button className="myButton">
            <div className="buttonText">{this.state.text}</div>
            <div className="buttonTextLoad">{this.state.textLoad}</div>
            <div className="buttonTextSuccess">{this.state.textSuccess}</div>
          </button>
        </div>
      </div>
    );
  }
}

和CSS

.myButtonContainer .myButton {
    background-color: red;
}
.myButtonContainer .myButton .buttonTextLoad, .myButtonContainer .myButton .buttonTextSuccess {
    display: none;
}
.myButtonContainer.loading .myButton {
    background-color: yellow;
}
.myButtonContainer.loading .myButton .buttonTextLoad {
    display: block;
}
.myButtonContainer.loading .myButton .buttonText, .myButtonContainer.loading .myButton .buttonTextSuccess {
    display: none;
}
.myButtonContainer.success .myButton {
    background-color: chartreuse;
}
.myButtonContainer.success .myButton .buttonTextSuccess {
    display: block;
}
.myButtonContainer.success .myButton .buttonText, .myButtonContainer.success .myButton .buttonTextLoading {
    display: none;
}

Answer 1

看来，按钮容器的 .loading和 .success不会同时共存。使用if语句确保选择器的元素在更改之前存在。

// Same to .success
let button = document.querySelector('.myButtonContainer.loading .myButton');
if (button) {
    button.style.cursor = 'default';   
    button.disabled = 'true';
}

Answer 2

const [loading, setLoading] = useState(false);
<div id='inputArea' className={`input-area${loading ? ' pointerEventNone' : ''}`} aria-disabled={loading}>
    //code..
</div>
<button className="myButton" onClick={()=>setLoading(!loading)}>Toggle Button for Disable</button>

CSS：

.pointerEventNone {
    pointer-events: none;
}