Grammer

最新推荐文章于 2025-09-04 18:55:33 发布

weixin_30955617

最新推荐文章于 2025-09-04 18:55:33 发布

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CC 4.0 BY-SA版权

文章标签： javascript ViewUI

原文链接：http://www.cnblogs.com/xiongwei2017/p/7350659.html

本文介绍了如何在React中混合使用JavaScript与HTML代码，通过具体的示例展示了React独特的语法特性，使得开发者能够更加灵活地组织代码。

Now let's study the grammer for react.

Usually, we write the js code and html code in a separate way. Just as below:

But react changed the way. It makes easier to write js & html tags and you can mix them together without caring about anything unless you obey the rule below:

Each time when react met `<`,it will compile with html tags ; If react met `{` ,it will compile with js.

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <link rel="stylesheet" href="../js/bootstrap.css">
    <script src="../js/react.js"></script>
    <script src="../js/react-dom.js"></script>
    <script src="../js/browser.js"></script>
    <title>React02</title>
</head>
<body>
<div id="example"></div>
<script type="text/babel">
    var names = ['Alice', 'Emily', 'Kate'];

    ReactDOM.render(
            <div>
                {
                    names.map(function (name) {
                        return <div>Hello, {name}!</div>
                    })
                }
            </div>,
        document.getElementById('example')
    );
</script>
</body>
</html>

Open the browser, you will see:

Another example


var arr = [
  <h1>Hello world!</h1>,
  <h2>React is awesome</h2>,
];
ReactDOM.render(
  <div>{arr}</div>,
  document.getElementById('example')
);

Looks strange,but legal. It's just what react is.

转载于:https://www.cnblogs.com/xiongwei2017/p/7350659.html