<html><body><h3>如何访问 OPTION 元素的演示</h3><select> <option id="myOption" value="volvocar">Volvo</option> <option value="saabcar">Saab</option></select><p>单击按钮可在下拉列表中获取 Volvo 选项的文本。</p><button onclick="myFunction()">试一试</button><p id="demo"></p><script>function myFunction() { var x = document.getElementById("myOption").text; document.getElementById("demo").innerHTML = x;}</script></body></html>