显示或隐藏React中的元素

我第一次摆弄React.js，找不到一种方法通过单击事件在页面上显示或隐藏一些东西。我没有加载任何其他库到页面，所以我正在寻找一些使用React库的本地方式。这是我目前得到的。我想在点击事件触发时显示结果div。

var Search= React.createClass({
    handleClick: function (event) {
        console.log(this.prop);
    },
    render: function () {
        return (
            <div className="date-range">
                <input type="submit" value="Search" onClick={this.handleClick} />
            </div>
        );
    }
});

var Results = React.createClass({
    render: function () {
        return (
            <div id="results" className="search-results">
                Some Results
            </div>
        );
    }
});

React.renderComponent(<Search /> , document.body);

当前回答

//use ternary condition

{ this.state.yourState ? <MyComponent /> : null } 

{ this.state.yourState && <MyComponent /> }

{ this.state.yourState == 'string' ? <MyComponent /> : ''}

{ this.state.yourState == 'string' && <MyComponent /> }

//Normal condition

if(this.state.yourState){
 return <MyComponent />
}else{
  return null;
}


<button onClick={()=>this.setState({yourState: !this.props.yourState}>Toggle View</button>

2019-12-10 10:18:46

其他回答

只要找到一种新的、神奇的方法来使用(useReducer)功能组件

const [state, handleChangeState] = useReducer((state) => !state, false); 改变状态

2021-09-17 15:26:20

<style type="text/css">
    .hidden { display:none; }
</style>

const Example = props => 
  <div className={props.shouldHide? 'hidden' : undefined}>Hello</div>

2014-07-05 21:11:24

// 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>
       )
   }
}

2021-05-15 13:33:25

   class FormPage extends React.Component{
      constructor(props){
           super(props);
           this.state = {
             hidediv: false
           }
      }

     handleClick = (){
       this.setState({
          hidediv: true
        });
      }

      render(){
        return(
        <div>
          <div className="date-range" hidden = {this.state.hidediv}>
               <input type="submit" value="Search" onClick={this.handleClick} />
          </div>
          <div id="results" className="search-results" hidden = {!this.state.hidediv}>
                        Some Results
           </div>
        </div>
        );
      }
  }

2018-08-23 13:17:27

下面是一个简单，有效和最佳的解决方案，使用无类React组件来显示/隐藏元素。React- hooks的使用可以在最新的使用React 16的create-react-app项目中使用

import React, {useState} from 'react';
function RenderPara(){
const [showDetail,setShowDetail] = useState(false);

const handleToggle = () => setShowDetail(!showDetail);

return (
<React.Fragment>
    <h3>
        Hiding some stuffs 
    </h3>
    <button onClick={handleToggle}>Toggle View</button>
   {showDetail && <p>
        There are lot of other stuffs too
    </p>}
</React.Fragment>)

}  
export default RenderPara;

快乐编码:)

2019-11-20 07:13:58

显示或隐藏React中的元素

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