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<!DOCTYPE html> <html> <body> <ul><li>咖啡</li><li id="myLI">茶</li><li>牛奶</li></ul> <p>单击按钮从列表中删除 id="myLI" 的 li 元素。</p> <button onclick="myFunction()">试一试</button> <script> function myFunction() { var item = document.getElementById("myLI"); item.parentNode.removeChild(item); } </script> </body> </html>