JS技巧

js获取selec的选中项

var obj = document.getElementById(”select_id”); //selectid

var index = obj.selectedIndex; // 选中索引

var text = obj.options[index].text; // 选中文本

var value = obj.options[index].value; // 选中值

或者

<select id="whichCurrent" runat="server" onchange="changeCurrent(this.options[this.options.selectedIndex].value)"

name="whichCurrent"></select></td>