HTML文件
<!--<html> <head><link rel="stylesheet" type="text/css" href="css/test.css"></head> <body> <h1>这是标题 1</h1><h2>这是标题 2</h2><p>这是段落</p><p class="no2">这个段落设置了内边距。</p> </body></html> --><!DOCTYPE html><html><body> <h1>My Web Page</h1> <p id="demo">A Paragraph.</p> <button type="button" onclick="myFunction()">点击这里</button> <p><b>注释：</b>myFunction 保存在名为 "myScript.js" 的外部文件中。</p> <script type="text/javascript" src="js/myScript.js"></script> </body></html>
CSS文件
h1 {color: red}p {color: blue}
JavaScript文件
function myFunction(){document.getElementById("demo").innerHTML="My First JavaScript Function1";}
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