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I am trying to get started building a site in ReactJS. However, when I tried to put my JS in a separate file, I started getting this error: "Uncaught SyntaxError: Unexpected token <".
I tried adding /** @jsx React.DOM */ to the top of the JS file, but it didn't fix anything. Below are the HTML and JS files. Any ideas as to what is going wrong?
HTML
<html>
<head>
<title>Page</title>
<script src="http://fb.me/react-0.12.2.js"></script>
<script src="http://fb.me/JSXTransformer-0.12.2.js"></script>
<script src="http://code.jquery.com/jquery-1.10.0.min.js"> </script>
<script src="./lander.js"> </script>
</head>
<body>
<div id="content"></div>
<script type="text/jsx">
React.render(
<Lander />,
document.getElementById('content')
);
</script>
</body>
</html>
JS
/**
* @jsx React.DOM
*/
var Lander = React.createClass({
render: function () {
var info = "Lorem ipsum dolor sit amet... ";
return(
<div>
<div className="info">{info}</div>
</div>
);
}
});
EDIT: I realized that I need to add type="text/jsx" to the script tag which includes my lander code. However, after adding this and reloading I get this warning
"You are using the in-browser JSX transformer. Be sure to precompile your JSX for production - http://facebook.github.io/react/docs/tooling-integration.html#jsx"
followed by this error:
"XMLHttpRequest cannot load file:///Users/.../lander.js. Cross origin requests are only supported for protocol schemes: http, data, chrome-extension, https, chrome-extension-resource."
it seems like there is something else that I need to do in order to get in browser jsx transform working, but I'm not sure what it is.
EDIT: OOOOH do I need to host it using MAMP or something?
216
In body ,where you connect your script , add type="text/jsx" and this`ll resolve the problem. Look at http://facebook.github.io/react/docs/getting-started.html and take note of the <script> tags, you need those included for JSX to work in the browser. Run this code from a single file and your it should work. Check if .
The "Uncaught SyntaxError: Unexpected token" occurs for multiple reasons: Having a <script /> tag that points to an HTML file instead of a JS file. Getting an HTML response from a server where JSON is expected. Having a <script /> tag that points to an incorrect path.
The JavaScript exceptions "unexpected token" occurs when a specific language construct was expected, but something else was provided. This might be a simple typo. Fortunately for developers, such errors are highlighted by the linters in code editors, so developers can fix it even before the app runs in the browser.
UPDATE -- use this instead:
<script type="text/babel" src="./lander.js"></script>
Add type="text/jsx" as an attribute of the script tag used to include the JavaScript file that must be transformed by JSX Transformer, like that:
<script type="text/jsx" src="./lander.js"></script>
Then you can use MAMP or some other service to host the page on localhost so that all of the inclusions work, as discussed here.
Thanks for all the help everyone!
185
JSTransform is deprecated , please use babel instead.
<script type="text/babel" src="./lander.js"></script>
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