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<!DOCTYPE html> <html> <body> <h3>如何访问 DT 元素的演示</h3> <dl> <dt id="myDT">咖啡</dt> <dd>黑色热饮</dd> </dl> <p>单击该按钮可获取 dt 元素的 HTML 内容。</p> <button onclick="myFunction()">试一试</button> <p id="demo"></p> <script> function myFunction() { var x = document.getElementById("myDT").innerHTML; document.getElementById("demo").innerHTML = x; } </script> </body> </html>