React-真实DOM和虚拟DOM

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<!DOCTYPE html>
<html lang="zh">
    <head>
        <meta charset="UTF-8">
        <title>hello_react</title>
    </head>
    <body>
        <div id="test"></div>
        <script type="text/javascript" src="js/react.development.js"></script>
        <script type="text/javascript" src="js/react-dom.development.js"></script>
        <script type="text/javascript" src="js/babel.min.js"></script>
        <script type="text/babel">
            const VDOM=(<h1><span>hello react</span></h1>)
            ReactDOM.render(VDOM,document.getElementById('test'))
            const DOM=document.getElementById('test')
            console.log('虚拟DOM',VDOM);
            console.log('真实DOM',DOM);
            debugger;
        </script>
    </body>
</html>
  • 真实DOM和虚拟DOM的区别
  1. 虚拟DOM:是一个对象。真实DOM:是THML标签。
  2. 虚拟DOM:属性少。真实DOM:属性多。
  3. 虚拟DOM通过React转换为真实DOM展示到页面