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<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>本教程(w3big.com)</title> </head> <body> <ol id="myOl"> <li>Coffee</li> <li>Tea</li> <li>Milk</li> <li>Juice</li> <li>Water</li> </ol> <p>点击按钮设置列表为倒序(9、 8、 7...),而不是升序(1、 2、 3...)。</p> <button onclick="myFunction()">尝试一下</button> <script> function myFunction(){ document.getElementById("myOl").reversed=true; } </script> </body> </html>