fmpq.com
源代码：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Fmpq教程(fmpq.com)</title> </head> <body> <p>点击按钮修改背景颜色。</p> <button id="myBtn">点我</button> <script> document.getElementById("myBtn").addEventListener("click", function() { this.style.backgroundColor = "red"; }); </script> </body> </html>
运行结果