如何使用ajax在dropdownliast中选择一个项目 [英] How to Selected an Item in dropdownliast using ajax

问题描述

亲爱的专家，



我在asp.net中使用Ajax Json。以下是我使用的以下Ajax Json代码......

Dear Experts,

I am Using Ajax Json in asp.net. Here is the below code of Ajax Json that i am used......

$.ajax(
      {
        type: "POST",
        url: "../../WebService.asmx/populate_Country",
        dataType: "json",
        data: {},
        contentType: "application/json; charset=utf-8",
        success: function (json) {

         var xmlDoc = "";
         var xml = "";
         xmlDoc = $.parseXML(json.d);
         xml = $(xmlDoc);
               
         document.getElementById("ddl_Country").innerHTML = "";

         $(xml).find("Table1").each(function () {
         var County_ID = $(this).find("Country_ID").text();
         var County_Name = $(this).find("Country").text();
         var County_Selected = $(this).find("Default_Selection").text();

         $("#ddl_Country").append("<option value='" + County_ID + "' selected='" + County_Selected + "'>" + County_Name + "</option>");

                        });
                    }
                });

以下是HTML代码，

And here is the below HTML Code,

<select id="ddl_Country" name="validation-select" class="select expandable-list validate[required]">

</select>

这些是数据来自数据库..

And these are the datas from database..

Country_ID    Country         Default_Selection
  
1             Canada              NULL    
2             United States       NULL   
3             Belgium             NULL  
4             Australia           NULL    
5             New Zealand         NULL 
6             India               Selected 

我想在下拉列表中填充这些数据....



这些代码工作正常，但国家印度没有被选中......



当我在源代码中对这些数据进行硬编码时，将选择印度...



请帮助我..



谢谢和问候，



Dileep ..

And i want to populate these datas in dropdownlist....

These codes are working fine, but Country India is not selected......

When i hard coded these datas in the source, then the India will be selected...

Please Help me..

Thanks and Regards,

Dileep..

推荐答案

.ajax（
{
type： POST，
url： ../../ WebService.asmx / populate_Country ，
dataType： < span class =code-string> json，
data：{}，
contentType： 应用/ JSON; charset = utf-8，
成功： function （json）{

var xmlDoc = ;
var xml = ;
xmlDoc =

.ajax( { type: "POST", url: "../../WebService.asmx/populate_Country", dataType: "json", data: {}, contentType: "application/json; charset=utf-8", success: function (json) { var xmlDoc = ""; var xml = ""; xmlDoc =

.parseXML（json.d）;
xml =

.parseXML(json.d); xml =

（xmlDoc）;

document .getElementById（ ddl_Country）。innerHTML = ;

(xmlDoc); document.getElementById("ddl_Country").innerHTML = "";

这篇关于如何使用ajax在dropdownliast中选择一个项目的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！