​x
 
<!DOCTYPE html>
<html>
<body>
​
<h1>演示如何访问 OPTION 元素</h1>
​
<select>
  <option id="myOption" value="volvocar">沃尔沃</option>
  <option value="saabcar">比亚迪</option>
</select>
​
<p>单击该按钮可获取下拉列表中沃尔沃选项的文本。</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>
​