从多个下拉列表中获取选定的值

// HTML代码
<select id="list1">
  <option value="value1">选项1</option>
  <option value="value2">选项2</option>
  <option value="value3">选项3</option>
</select>

<select id="list2">
  <option value="value4">选项4</option>
  <option value="value5">选项5</option>
  <option value="value6">选项6</option>
</select>

<button onclick="getSelectedValues()">获取选定的值</button>

// JavaScript代码
function getSelectedValues() {
  var list1 = document.getElementById("list1");
  var list2 = document.getElementById("list2");

  var selectedValue1 = list1.options[list1.selectedIndex].value;
  var selectedValue2 = list2.options[list2.selectedIndex].value;

  console.log("选定的值1：" + selectedValue1);
  console.log("选定的值2：" + selectedValue2);
}