Js for Select

1）var   obj;
obj = document.getElementById("Card"); //擷取標籤的Id
index = obj.selectedIndex; // 選中索引
value = obj.options[index].value; // 選中value值
text = obj.options[index].text; // 選中text值

2）增加新一行
addSelectEmptyAndValueOption(obj,value,text);
function addSelectEmptyAndValueOption(select,value,value2){
var option = document.createElement("option");
option.value = value;
option.innerHTML =value2;
select.appendChild(option);
 }
 
3）$('#selectId').empty();  //清空資料

4）省、市、區的聯動，選擇預設值
function refreshResult(s){
var obj;
var str;
var i;
if(s=="1"){
obj= document.getElementById("province");
  str='<%=deliveryprovince%>';
for(i=0;i<obj.length;i++){
             if(obj[i].text==str){
                  obj[i].selected=true;
                  showAreaInfo(obj[i].value,"city");
                  refreshResult("2");
                 }
}
 }else if(s=="2"){
obj= document.getElementById("city");
   str='<%=deliverycity%>';
for(i=0;i<obj.length;i++){
             if(obj[i].text==str){
                  obj[i].selected=true;
                  showAreaInfo(obj[i].value,"county");
                  refreshResult("3");
                 }
}
 }else if(s=="3"){
obj= document.getElementById("county");
   str='<%=deliveryarea%>';
for(i=0;i<obj.length;i++){
             if(obj[i].text==str){
                  obj[i].selected=true;
                 }
}

}
}

5）動態給table添加新一行的資料
function insertRow2(MaterialCode,MaterialName,Weight,UnitName,RetailPrice,InvQty,i){
var lb1Name="lbName"+i; //貨品全稱
var lb1Price="lbPrice"+i;//價格
var lbWeight="lbWeight"+i;       //規格
var lbInvQty="lbInvQty"+i;           //庫存量
    $("#shopInvInfo").append("<tr>"+
    '<td width=100><label id='+lb1Name+'>'+MaterialName+'</label></td>'+
    '<td width=100>(<label id='+lbWeight+'>'+Weight+''+UnitName+'</label>)</td>'+
    '<td width=100>(<label id='+lb1Price+'>'+RetailPrice+'元</label>)</td>'+
    '<td width=100>備貨量：<label id='+lbInvQty+'>'+InvQty+'</label></td>'+
    "</tr>");
}

作者：loveheronly