我想要达到的结果
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
.home {
margin: 100px auto;
width: 500px;
background-color: rgb(148, 92, 19);
}
.test {
background-color: red;
}
img {
width: 200px;
height: 120px;
}
</style>
</head>
<body>
<div class="home">
<div class="test"></div>
</div>
<script type="text/javascript" src="react.development.js"></script>
<script type="text/javascript" src="react-dom.development.js"></script>
<script type="text/javascript" src="babel.min.js"></script>
<script type="text/babel">
class Hellow extends React.Component {
constructor(props) {
super(props)
this.state = { ele: 'bb' }
}
getEle = (e) => {
console.log(e);
// this.setState({ ele: 'f' });
// console.log(this.state.ele);
}
render() {
return (
<div ref={this.getEle}>
<h3>nice day</h3>
<img src="one.jpg" alt=""></img><br></br>
<button onClick={this.addPicture}>add photo</button>
</div>
)
}
addPicture = () => {
this.setState({ ele: 'e' });
console.log(this.state.ele);
}
}
ReactDOM.render(<Hellow />, document.querySelector('.test'))
</script>
</body>
</html>
