获取option中间的值

<select name="wytype" id="wytype">
    <option value="">—请选择—</option>
    <option value="1">土地</option>
    <option value="2">厂房</option>
    <option value="3">新房</option>
</select>
<script language="javascript">
    alert(document.getElementById("wytype").options[1].text);
</script>