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<!DOCTYPE html> <html> <body> <p>点击按钮获取select元素最后一个子节点的文本。</p> <select id="mySelect" size="4"><option>Audi</option><option>BMW</option><option>Saab</option><option>Volvo</option></select><br><br> <button onclick="myFunction()">试一试</button> <p id="demo"></p> <script> function myFunction() { var x = document.getElementById("mySelect").lastChild.text; document.getElementById("demo").innerHTML = x; } </script> </body> </html>