在某些情况下，高阶分量可能有用:

创建高阶组件:

export var HidableComponent = (ComposedComponent) => class extends React.Component {
    render() {
        if ((this.props.shouldHide!=null && this.props.shouldHide()) || this.props.hidden)
            return null;
        return <ComposedComponent {...this.props}  />;
    }
};

扩展你自己的组件:

export const MyComp= HidableComponent(MyCompBasic);

然后你可以这样使用它:

<MyComp hidden={true} ... />
<MyComp shouldHide={this.props.useSomeFunctionHere} ... />

这减少了一点样板文件，并强制坚持命名约定，但请注意，MyComp仍然会被实例化-省略的方法是前面提到的:

{ ！hidden &&; <MyComp ... /> }

在状态中设置一个布尔值(例如:'show)'，然后执行:

var style = {};
if (!this.state.show) {
  style.display = 'none'
}

return <div style={style}>...</div>

一个使用Hooks在React中显示/隐藏元素的简单方法

const [showText, setShowText] = useState(false);

现在，让我们为渲染方法添加一些逻辑:

{showText && <div>This text will show!</div>}

And

onClick={() => setShowText(!showText)}

好工作。

你必须在代码中做一些小的改变来持续隐藏和显示

const onClick = () => {setShowResults(!showResults}

问题会得到解决

const Search = () => {
  const [showResults, setShowResults] = React.useState(false)
  const onClick = () => setShowResults(true)
  const onClick = () => {setShowResults(!showResults}
  return (
    <div>
      <input type="submit" value="Search" onClick={onClick} />
      { showResults ? <Results /> : null }
    </div>
  )
}

const Results = () => (
  <div id="results" className="search-results">
    Some Results
  </div>
)

ReactDOM.render(<Search />, document.querySelector("#container"))

<script src="https://cdnjs.cloudflare.com/ajax/libs/react/16.13.1/umd/react.production.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/16.13.1/umd/react-dom.production.min.js"></script>

<div id="container">
  <!-- This element's contents will be replaced with your component. -->
</div>
```

// Try this way

class App extends Component{

  state = {
     isActive:false
  }

  showHandler = ()=>{
      this.setState({
          isActive: true
      })
  }

  hideHandler = () =>{
      this.setState({
          isActive: false
      })
  }

   render(){
       return(
           <div>
           {this.state.isActive ? <h1>Hello React jS</h1> : null }
             <button onClick={this.showHandler}>Show</button>
             <button onClick={this.hideHandler}>Hide</button>
           </div>
       )
   }
}

class Toggle extends React.Component {
  state = {
    show: true,
  }

  render() {
    const {show} = this.state;
    return (
      <div>
        <button onClick={()=> this.setState({show: !show })}>
          toggle: {show ? 'show' : 'hide'}
        </button>    
        {show && <div>Hi there</div>}
      </div>
     );
  }
}