jQuery获得下拉框值的代码

$("#ddlRegType ").attr("value","Normal“); 
$("#ddlRegType ").val("Normal"); 
$("#ddlRegType ").get(0).value = value;

var count=$("#ddlRegType option").length; 
for(var i=0;i<count;i++) 
{ if($("#ddlRegType ").get(0).options[i].text == text) 
{ 
$("#ddlRegType ").get(0).options[i].selected = true; 
break; 
} 
} 

$("#select_id option[text='jQuery']").attr("selected", true);

$("#select_id").append("<option value='Value'>Text</option>"); //添加一项option 
$("#select_id").prepend("<option value='0'>请选择</option>"); //在前面插入一项option 
$("#select_id option:last").remove(); //删除索引值最大的Option 
$("#select_id option[index='0']").remove();//删除索引值为0的Option 
$("#select_id option[value='3']").remove(); //删除值为3的Option 
$("#select_id option[text='4']").remove(); //删除TEXT值为4的Option