javascript 未捕获的 ReferenceError: mountNode 未定义
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/23600443/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Uncaught ReferenceError: mountNode is not defined
提问by Hokutosei
forgive me i've searched everywhere and I'm new in reactjs and trying out examples. I have an error
原谅我到处搜索，我是 reactjs 的新手并尝试示例。我有一个错误
Uncaught ReferenceError: mountNode is not defined
I am following the example from here http://facebook.github.io/react/tips/initial-ajax.html
我正在遵循这里的示例http://facebook.github.io/react/tips/initial-ajax.html
and my code looks like this
我的代码看起来像这样
<!DOCTYPE html>
<html>
<head>
<title><%= title %></title>
<link rel='stylesheet' href='/stylesheets/style.css' />
<script src="//code.jquery.com/jquery-1.11.0.min.js"></script>
<script src="/javascripts/reactjs/react.js"></script>
<script src="/javascripts/reactjs/JSXTransformer.js"></script>
</head>
<body>
<h1><%= title %></h1>
<p>Welcome to <%= title %></p>
<div id="example"></div>
<script src="/javascripts/reactjs/build/helloworld.js"></script>
<script type="text/jsx">
/** @jsx React.DOM */
var UserGist = React.createClass({
getInitialState: function() {
return {
username: '',
lastGistUrl: ''
};
},
componentDidMount: function() {
$.get(this.props.source, function(result) {
var lastGist = result[0];
this.setState({
username: lastGist.owner.login,
lastGistUrl: lastGist.html_url
});
}.bind(this));
},
render: function() {
return (
<div>
{this.state.username}last gist is
<a href={this.state.lastGistUrl}>here</a>.
</div>
);
}
});
React.renderComponent( <UserGist source="https://api.github.com/users/octocat/gists" />, mountNode );
</script>
</body>
</html>
Thank you in advance!
先感谢您！
回答by Sophie Alpert
You need to tell React where to mount the <UserGist />component. You probably want to replace mountNodewith document.getElementById('example')to refer to your <div id="example"></div>element:
你需要告诉 React 在哪里挂载<UserGist />组件。你可能要替换mountNode与document.getElementById('example')参考你的<div id="example"></div>元素：
React.render(
<UserGist source="https://api.github.com/users/octocat/gists" />,
document.getElementById('example')
);
回答by Val Martinez
Being the accepted answer done, I'd like to add one thing: Don't forget to include references to all necessaries js's libs in your html head section if you are testing this out of "kit examples folder"
完成接受的答案后，我想添加一件事：如果您要从“套件示例文件夹”中进行测试，请不要忘记在 html 标题部分中包含对所有必需 js 库的引用
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<script src="https://npmcdn.com/[email protected]/dist/react.js"></script>
<script src="https://npmcdn.com/[email protected]/dist/react-dom.js"></script>
<script src="https://unpkg.com/[email protected]/babel.min.js"></script>
