React Uncaught Reference Error - 未定义对象/类
[英]React Uncaught Reference Error - object/class not defined
问题描述
I'm still completely new to react. 
我还是全新的反应。 I tried creating in index.html file with the following contents: 我尝试使用以下内容在index.html文件中创建：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>React Tutorial</title>
<!-- Not present in the tutorial. Just for basic styling. -->
<link rel="stylesheet" href="css/base.css" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/0.14.7/react.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/react/0.14.7/react-dom.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-core/5.6.15/browser.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.2.0/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/marked/0.3.5/marked.min.js"></script>
</head>
<body id="html-body">
<div id="content"></div>
<script type="text/babel" src="scripts/box.js"></script>
<script type="text/babel">
ReactDOM.render(
<Box />,
document.getElementById('content')
);
</script>
</body>
</html>
And in scripts/box.js I have the following code: 在scripts/box.js我有以下代码：
var Box = React.createClass({
render: function() {
return (
<h2>Purple Monkey</h2>
);
}
});
When I view index.html in my browser, I get the error Uncaught ReferenceError: Box is not defined . 当我在浏览器中查看index.html时，我收到错误Uncaught ReferenceError: Box is not defined 。 But when i move the ReactDOM.render line in index.html into the scripts/box.js right after defining the Box class, everything works. 但是当我在定义Box类之后立即将index.html中的ReactDOM.render行移动到scripts/box.js ，一切正常。
Why can't I execute the ReactDOM.render outside of scripts/box.js ? 为什么我ReactDOM.render在scripts/box.js之外执行scripts/box.js ？ How do I properly include/require a react component so it can be used by other javascript files? 如何正确包含/要求反应组件，以便其他javascript文件可以使用它？
1 个解决方案
解决方案1
1 已采纳 2016-03-25 19:30:48
我用window.Box =替换了var Box = ，然后一切正常。
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