ReactJS的新手, 找不到为什么该页面没有显示任何内容-
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script src="react.16.8.6.development.js"></script>
<script src="react-dom.16.8.6.development.js"></script>
<script src="babel.7.5.4.min.js"></script>
</head>
<body>
<div id="container"></div>
<script type="text/babel">
class MyClass extends React.Componet{
render() {
return(<h1>Hello React Componets!</h1>);
}
}
ReactDOM.render(
<h1>MyClass</h1>,
document.getElementById('container')
);
</script>
</body>
</html>
控制台出现错误-
VM43:19未捕获的TypeError:超级表达式必须为null或_inherits(:19:113)处的函数 在:26:3 在:42:2
答案 0 :(得分:1)
尝试以下代码:
<script type="text/babel">
class MyClass extends React.Component{
render() {
return(<h1>Hello React Componets!</h1>);
}
}
ReactDOM.render(
<h1><MyClass/></h1>,
document.getElementById('container')
);
</script>
答案 1 :(得分:1)
您的问题在这里,
<h1>MyClass</h1>, //This is not a react component, this will only print `MyClass` as text on page
只需更改
ReactDOM.render(
<h1>MyClass</h1>,
document.getElementById('container')
);
对此,
ReactDOM.render(
<MyClass />,
document.getElementById('container')
);
注意:更正代码中的错字,
class MyClass extends React.Componet
应该是class MyClass extends React.Component{