基本使用
<!DOCTYPE html> <html lang=\"en\"> <head> <meta charset=\"UTF-8\"> <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"> <title>hello</title> </head> <body> <div id=\"app\"> </div> <script crossorigin src=\"https://unpkg.com/react@16/umd/react.production.min.js\"></script> <script crossorigin src=\"https://unpkg.com/react-dom@16/umd/react-dom.production.min.js\"></script> <script src=\"https://unpkg.com/babel-standalone@6/babel.min.js\"></script> <script type=\"text/babel\"> // 虚拟dom const str = \'hello react\' const vDom = <h1>{str}</h1> // const vDom = <pppp>hello react</pppp> // 把虚拟dom转化成真实的dom ReactDOM.render(vDom,document.getElementById(\"app\")) </script> </body> </html>
创建虚拟dom的两种方式
<!DOCTYPE html> <html lang=\"en\"> <head> <meta charset=\"UTF-8\"> <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"> <title>hello</title> </head> <body> <div id=\"app\"> </div> <script crossorigin src=\"https://unpkg.com/react@16/umd/react.production.min.js\"></script> <script crossorigin src=\"https://unpkg.com/react-dom@16/umd/react-dom.production.min.js\"></script> <script src=\"https://unpkg.com/babel-standalone@6/babel.min.js\"></script> <script> // 第一种纯js创建(一般不用) // 虚拟dom const str = \'hello react\' const vDom = React.createElement(\'h1\', { id: \'myId\' }, str) // const vDom = <pppp>hello react</pppp> // 把虚拟dom转化成真实的dom ReactDOM.render(vDom, document.getElementById(\"app\")) // </script> </body> </html>
<!DOCTYPE html> <html lang=\"en\"> <head> <meta charset=\"UTF-8\"> <meta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"> <title>hello</title> </head> <body> <div id=\"app\"> </div> <script crossorigin src=\"https://unpkg.com/react@16/umd/react.production.min.js\"></script> <script crossorigin src=\"https://unpkg.com/react-dom@16/umd/react-dom.production.min.js\"></script> <script src=\"https://unpkg.com/babel-standalone@6/babel.min.js\"></script> <script type=\"text/babel\"> // 第一种纯js创建(一般不用) // [] ul li 用forEach实现 var names = [\'张飞\',\'关羽\',\'赵云\'] const ul = <ul> { names && names.map((name,index)=> <li key={index}> {name} </li> ) } </ul> ReactDOM.render(ul,document.getElementById(\"app\")) // </script> </body> </html>
知识点扩展:
React pwa的配置
在到webpack配置文件中添加插件
const WorkboxWebpackPlugin = require(\'workbox-webpack-plugin\') plugins: [ new MiniCssExtractPlugin({ filename: \'[name].css\' }), new WorkboxWebpackPlugin.GenerateSW({ clientsClaim:true, skipWaiting:true }) ],
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