W3School TIY Editor
W3School 在线教程
改变方向
暗黑模式
运行代码
<!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width, initial-scale=1"> <style> body { padding: 25px; background-color: white; color: black; font-size: 25px; } .dark-mode { background-color: black; color: white; } </style> </head> <body> <h1>切换暗色/亮色模式</h1> <p>点击按钮在此页面之间切换暗色和亮色模式。</p> <button onclick="myFunction()">切换暗色模式</button> <script> function myFunction() { var element = document.body; element.classList.toggle("dark-mode"); } </script> </body> </html>