select的简单问题？

Question

To impeller(竹子) 
好象没有 text属性呀

Answer 1

document.getElementById("selectLanguage").options[document.getElementById("selectLanguage").selectedIndex].text;

Answer 2

selectLanguage.options[selectLanguage.selectedindex].text

Answer 3

this.options[this.selectedindex].text

Answer 4

得到下拉框中每个选项标题的值<select id="selectLanguage" onchange="change(document.all.selectLanguage.options[document.all.selectLanguage.selectedIndex].text);">
  <option value="English">English</option>
  <option value="Chinese">中文</option>
  <option value="Japanese">日本語</option>
</select><script>
function change(aa)
{
 var aa;
alert(aa);
}
</script>