嗨,我是新来的人,
我正在尝试运行这个琐碎的代码段,但是它不起作用:
<head>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.2.0/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/15.2.0/react-dom.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-core/5.8.25/browser-polyfill.min.js"></script>
</head>
<body>
<div id="app_root"></div>
<script type="text/babel">
var Hello = React.createClass({
render: function() {
return(
<div>Hello World!</div>
);
}
});
ReactDOM.render(<Hello />, document.getElementById("app_root"));
</script>
</body>
控制台不显示任何错误消息,并且运行脚本后没有得到任何输出
最佳答案
正如其他答案中提到的那样,这是因为JSX需要babel
。在您的情况下,只需要包括babel
而不是browser-polyfill
即可:
<head>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/15.2.0/react.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/15.2.0/react-dom.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-standalone/6.26.0/babel.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-core/5.8.25/browser-polyfill.min.js"></script>
</head>
<body>
<div id="app_root"></div>
<script type="text/babel">
var Hello = React.createClass({
render: function() {
return(
<div>Hello World!</div>
);
}
});
ReactDOM.render(<Hello />, document.getElementById("app_root"));
</script>
</body>
关于javascript - 简单的React代码段不起作用,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/48119435/