1、jquery
//获取value值
$("#ddlSubmodel").val();
//获取text值
$("#ddlSubmodel").find("option:selected").text();
2、javascript
//获取value值
document.getElementById("ddlSubmodel").value;
//获取text值
var select = document.getElementById("ddlSubmodel");
if (select.selectedIndex > -) {
select.options[select.selectedIndex].innerText;
}