Ajax implementation Asynchronous Operation instance _ request data for XML format

JS Classification has a section "Native JS asynchronous request, XML parsing" mainly explains how JS foreground processing XML format request and how to accept the XML data returned by the server parsing, today I will use an example to illustrate how to do.

The parameter type of the foreground is also XML using jquery:

123456789101112131415161718192021

function test(){    varxmlString ="<bookstore>"+                    "<book Type=‘必修课‘ ISBN=‘7-111-19149-2‘>"+                    "<title>数据结构</title>"+                    "<author>严蔚敏</author>"+                    "<price>30.00</price>"+                    "</book></bookstore>";    $.ajax({    type: "post",    url: "Hand/Ajax.ashx",    data: "strxml="+xmlString,    datatype:"xml",    success: function(xml){        //根据resultText更新页面        alert("success");        alert($(xml).find(‘Table1‘).find(‘title‘).text());    },    error:function(XMLResponse){alert(XMLResponse.responseText)}});}

The foreground is in the XML format parameters, how to do in the background? This is for XML read-write, here is a simple explanation:

12	XmlDocument xdoc = newXmlDocument();<br>//xml字符串操作xdoc.LoadXml(strxml);//读取xml字符串strxml

Add a price element. Adds a node   XmlElement Newelem = doc. CreateElement ("price");   Newelem.innertext = "10.95";   Doc. Documentelement.appendchild (Newelem);//Add a node

1	xdoc.Load(fileName);//读取xml文件fileName是文件的路径

The above simple description of Loadxml and load simple usage, here do not elaborate. The following is the XML format parameter for background processing foreground

1234567891011121314

// 得到根节点bookstoreXmlNode xn = xdoc.SelectSingleNode("bookstore");// 得到根节点的所有子节点XmlNodeList xnl = xn.ChildNodes;// 将节点转换为元素，便于得到节点的属性值XmlElement xe = (XmlElement)(xnl.Item(0));// 得到Type和ISBN两个属性的属性值stringbookISBN = xe.GetAttribute("ISBN").ToString();stringbookType = xe.GetAttribute("Type").ToString();// 得到Book节点的所有子节点XmlNodeList xnl0 = xe.ChildNodes;stringbookName = xnl0.Item(0).InnerText;stringbookAuthor = xnl0.Item(1).InnerText;doublebookPrice = Convert.ToDouble(xnl0.Item(2).InnerText);

After the background processing, return XML format data, of course this premise context. Response.ContentType = "Text/xml";

1234	DataSet ds = newDataSet();ds = GetList();context.Response.Clear();context.Response.Write(ds.GetXml());

　　

123456789101112131415

privateDataSet GetList(){    DataSet ds = newDataSet();    DataTable dt = newDataTable();    dt.Columns.Add("title");    dt.Columns.Add("author");    dt.Columns.Add("price");    DataRow dr = dt.NewRow();    dr["title"] = "book1";    dr["author"] = "matest";    dr["price"] = 30.01;    dt.Rows.Add(dr);    ds.Tables.Add(dt);    returnds;}

This is Jquery+ajax+xml's application.

Ajax implementation Asynchronous Operation instance _ request data for XML format