React JSX


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React uses JSX instead of regular JavaScript.

JSX is a JavaScript syntax extension that looks a lot like XML.

React JSXsyntax

We don't necessarily need to use JSX, but it has the following advantages:

JSX executes faster because it is optimized after being compiled into JavaScript code.

It is type-safe and errors can be found during the compilation process.

Writing templates using JSX is simpler and faster.

React JSXexample

<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8" />
    <title>php.cn React 实例</title>
    <script src="https://cdn.bootcss.com/react/15.4.2/react.min.js"></script>
	<script src="https://cdn.bootcss.com/react/15.4.2/react-dom.min.js"></script>
	<script src="https://cdn.bootcss.com/babel-standalone/6.22.1/babel.min.js"></script>
  </head>
  <body>
    <div id="example"></div>
    <script type="text/babel">
      ReactDOM.render(
      	<div>
      	<h1>php中文网</h1>
      	<h2>欢迎学习 React</h2>
        <p data-myattribute = "somevalue">这是一个很不错的 JavaScript 库!</p>
        </div>
      	,
      	document.getElementById('example')
      );
    </script>
  </body>
</html>

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