Testaccount
/
1.Test


			
				
					
						
						
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							<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <script src="../js/babel.min.js"></script>
  <script src="../js/react.development.js"></script>
  <script src="../js/react-dom.development.js"></script>
</head>
<body>
  <div id="root"></div>
  <script type="text/babel">
    class MyComponent extends React.Component {
      state = {
        title: '',
        count: 0
      }
      handleAdd() {
        this.setState({
          count: this.state.count + 1
        })
      }
      printCount() {
        console.log(this.state.count)
      }
      handleReduce = () => {
        this.setState({
          count: this.state.count - 1
        })
      }
      render() {
        return (
          <div>
            <h1>{this.state.title}</h1>  
            <p>当前数值: {this.state.count}</p>
            <button onClick={this.handleAdd.bind(this)}>+</button>
            <button onClick={this.handleReduce}>-</button>
          </div>
        )
      }
    }
    let element = <MyComponent/>
    ReactDOM.createRoot(document.querySelector('#root')).render(element)
    </script>
</body>
</html>