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Ol reversed 属性
tryjsref_ol_reversed2
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<!DOCTYPE html> <html> <body> <ol id="myOl"> <li>Coffee</li> <li>Tea</li> <li>Milk</li> <li>Juice</li> <li>Water</li> </ol> <p>Click the button to find out if the list order is descending or not.</p> <button onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction() { var x = document.getElementById("myOl").reversed; document.getElementById("demo").innerHTML = x; } </script> </body> </html>