diff --git a/react/README.md b/react/README.md
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+react 可以不用npm包那一堆来写，react创建dom节点（虚拟），reactDOM去渲染成真实dom。
+reactDOM就是一个虚拟dom到真实dom的转换器
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diff --git a/react/index.html b/react/index.html
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+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <meta http-equiv="X-UA-Compatible" content="ie=edge">
+    <title>Document</title>
+</head>
+<body>
+    <div id="root"></div>
+    <script crossorigin src="https://unpkg.com/react@16/umd/react.development.js"></script>
+    <script crossorigin src="https://unpkg.com/react-dom@16/umd/react-dom.development.js"></script>
+    <script>
+        var appDom = React.createElement('h1', null, 'hello react')
+        ReactDOM.render(
+            appDom,
+        document.getElementById('root')
+        );
+    </script>
+</body>
+</html>
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