如何在jQuery中用JSON数据填充下拉列表？

小编典典

如何在jQuery中用JSON数据填充下拉列表？

json

我正在开发一个国家/地区级联下拉列表…我基于返回了json结果，countryId但我不知道如何在新的下拉列表框中填充/填充它。

这是我正在使用的

function getstate(countryId) {
    $.ajax({
        type: "POST",
        url: "Reg_Form.aspx/Getstates",
        data: "{'countryId':" + (countryId) + "}",
        contentType: "application/json; charset=utf-8",
        global: false,
        async: false,
        dataType: "json",
        success: function(jsonObj) {
            alert(jsonObj.d);
        }
    });
    return false;
}

警报给了这个

{"Table" : [{"stateid" : "2","statename" : "Tamilnadu"},
            {"stateid" : "3","statename" : "Karnataka"},
            {"stateid" : "4","statename" : "Andaman and Nicobar"},
             {"stateid" : "5","statename" : "Andhra Pradesh"},
             {"stateid" : "6","statename" : "Arunachal Pradesh"}]}

我的aspx页面上有这个

<td>
<asp:DropDownList ID="DLCountry" runat="server" CssClass="dropDownListSkin" 
 onchange="return getstate(this.value);">
 </asp:DropDownList>
  </td>
 <td>
 <asp:DropDownList ID="DLState" runat="server" CssClass="dropDownListSkin">
   </asp:DropDownList>
 </td>

关于如何填充DLState下拉菜单的任何建议…

编辑：

当我通过萤火虫检查时，我收到了有关ajax帖子的回复，

{"d":"{\"Table\" : [{\"stateid\" : \"2\",\"statename\" : \"Tamilnadu\"},{\"stateid\" : \"3\",\"statename\" : \"Karnataka\"},{\"stateid\" : \"4\",\"statename\" : \"Andaman and Nicobar\"},{\"stateid\" : \"5\",\"statename\" : \"Andhra Pradesh\"},{\"stateid\" : \"6\",\"statename\" : \"Arunachal Pradesh\"},{\"stateid\" : \"7\",\"statename\" : \"Assam\"},{\"stateid\" : \"8\",\"statename\" : \"Bihar\"},{\"stateid\" : \"9\",\"statename\" : \"Dadra and N. Haveli\"},{\"stateid\" : \"10\",\"statename\" : \"Daman and Diu\"},{\"stateid\" : \"11\",\"statename\" : \"Delhi\"},{\"stateid\" : \"12\",\"statename\" : \"Goa\"},{\"stateid\" : \"13\",\"statename\" : \"Gujarat\"},{\"stateid\" : \"14\",\"statename\" : \"Haryana\"},{\"stateid\" : \"15\",\"statename\" : \"Himachal Pradesh\"},{\"stateid\" : \"16\",\"statename\" : \"Jammu and Kashmir\"},{\"stateid\" : \"17\",\"statename\" : \"Kerala\"},{\"stateid\" : \"18\",\"statename\" : \"Laccadive Islands\"},{\"stateid\" : \"19\",\"statename\" : \"Madhya Pradesh\"},{\"stateid\" : \"20\",\"statename\" : \"Maharashtra\"},{\"stateid\" : \"21\",\"statename\" : \"Manipur\"},{\"stateid\" : \"22\",\"statename\" : \"Meghalaya\"},{\"stateid\" : \"23\",\"statename\" : \"Mizoram\"},{\"stateid\" : \"24\",\"statename\" : \"Nagaland\"},{\"stateid\" : \"25\",\"statename\" : \"Orissa\"},{\"stateid\" : \"26\",\"statename\" : \"Pondicherry\"},{\"stateid\" : \"27\",\"statename\" : \"Punjab\"},{\"stateid\" : \"28\",\"statename\" : \"Rajasthan\"},{\"stateid\" : \"29\",\"statename\" : \"Sikkim\"},{\"stateid\" : \"30\",\"statename\" : \"Tripura\"},{\"stateid\" : \"31\",\"statename\" : \"Uttar Pradesh\"},{\"stateid\" : \"32\",\"statename\" : \"West Bengal\"}]}"}

阅读 223

2020-07-27

共1个答案

小编典典

var listItems= "";
var jsonData = jsonObj.d;
    for (var i = 0; i < jsonData.Table.length; i++){
      listItems+= "<option value='" + jsonData.Table[i].stateid + "'>" + jsonData.Table[i].statename + "</option>";
    }
    $("#<%=DLState.ClientID%>").html(listItems);

例

   <html>
    <head></head>
    <body>
      <select id="DLState">
      </select>
    </body>
    </html>

    /*javascript*/
    var jsonList = {"Table" : [{"stateid" : "2","statename" : "Tamilnadu"},
                {"stateid" : "3","statename" : "Karnataka"},
                {"stateid" : "4","statename" : "Andaman and Nicobar"},
                 {"stateid" : "5","statename" : "Andhra Pradesh"},
                 {"stateid" : "6","statename" : "Arunachal Pradesh"}]}

    $(document).ready(function(){
      var listItems= "";
      for (var i = 0; i < jsonList.Table.length; i++){
        listItems+= "<option value='" + jsonList.Table[i].stateid + "'>" + jsonList.Table[i].statename + "</option>";
      }
      $("#DLState").html(listItems);
    });

2020-07-27