ReactJS:“未捕获的语法错误:意外的令牌 <"-前端问题

ReactJS: quot;Uncaught SyntaxError: Unexpected token lt;quot;(ReactJS:“未捕获的语法错误:意外的令牌 lt;)

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问题描述

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>

/**
 * @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?

解决方案

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!

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