versi javascript permintaan penghantaran ajax
(1) Cipta objek XMLHttpRequest Objek ini adalah teras permintaan ajax dan pembawa maklumat permintaan dan tindak balas ajax Pelayar yang berbeza mempunyai kaedah penciptaan yang berbeza
(2), laluan permintaan
(3) Gunakan kaedah terbuka untuk mengikat dan menghantar permintaan
(4). Gunakan kaedah hantar() untuk menghantar permintaan
(5), Dapatkan rentetan yang dikembalikan oleh pelayan xmlhttpRequest.responseText;
(6), dapatkan nilai yang dikembalikan oleh pelayan dan simpannya dalam bentuk objek xml xmlhttpRequest.responseXML;
(7) Gunakan kaedah dan atribut pokok nod DOM W3C untuk memeriksa dan menghuraikan objek dokumen XML.
Pendahuluan:
Baru-baru ini, semasa projek itu dilancarkan dan dilaksanakan, saya mempunyai sedikit masa lapang, saya secara tidak sengaja menemui apa yang saya tulis sebelum ini mengenai kaedah ajax xmlHttp asli javascript dan kaedah ajax pemalam jquery yang kemudian. jadi saya membuat beberapa ringkasan atas sebab masa, ia tidak disertakan dalam semua Ujian pada penyemak imbas yang sedang diuji ialah IE8, 9, 10, Google Chrome, Mozilla Firefox dan Opera Jika anda menemui sebarang masalah semasa ujian pengesahan , sila berikan saya maklum balas tepat pada masanya. Terima kasih semua.
Kembali kepada perniagaan, mari terus ke kod:
Kod bahagian hadapan
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Ajax练习</title> <script src="/Scripts/jquery-1.4.1.min.js" type="text/javascript"></script> <style type="text/css"> label{width:50px;display:inline-block;} </style> </head> <body> <div id="contentDiv"> <h2>html5表单元素</h2> <label>E-mail</label><input type="email" name="UserEmail" id="UserEmail" value="251608027@qq.com" /><br /> <label>URL:</label><input type="url" name="UserURL" id="UserURL" value="http://www.baidu.com" /><br /> <label>Number:</label><input type="number" name="UserNumber" id="UserNumber" min="1" max="100" value="87" /><br /> <label>Range:</label><input type="range" name="UserRange" min="1" max="100" value="78" /><br /> <label>Date:</label><input type="date" name="UserDate" id="UserDate" value="2015-12-01" /><br /> <label>Search:</label><input type="search" name="UserSearch" id="UserSearch" value="search" /><br /> <label id="lblMsg" style="color:Red; width:100%;"></label><br /> <input type="button" id="btnXmlHttp" value="提 交" onclick="return xmlPost();" /> <input type="button" id="btnAjax" value="Ajax提 交" onclick="return Ajax();" /> <input type="button" id="btnPost" value="Post提 交" onclick="return Post();" /> <input type="button" id="btnGet" value="Get提 交" onclick="return Get();" /> <input type="button" id="btnGetJSON" value="GetJSON提 交" onclick="return GetJSON();" /> <input type="button" id="btnCustom" value="Custom提 交" onclick="return Custom();" /> <br /><label id="lblAD" style="color:Red; width:100%;">.NET技术交流群:70895254,欢迎大家</label> <script type="text/javascript"> //基础数据 var jsonData = { UserEmail: $("#UserEmail").val(), UserURL: $("#UserURL").val(), UserNumber: $("#UserNumber").val(), UserRange: $("#UserRange").val(), UserDate: $("#UserDate").val(), UserSearch: $("#UserSearch").val() }; //统一返回结果处理 function Data(data, type) { if (data && data.length > 0) { var lblMsg = ""; for (i = 0; i < data.length; i++) { for (var j in data[i]) { lblMsg += j + ":" + data[i][j]; if (j != "Name" && j != "UserSearch") { lblMsg += "," } } if (i != data.length) { lblMsg += ";"; } } $("#lblMsg").html(type + "请求成功,返回结果:" + lblMsg); } } </script> <script type="text/javascript"> //javascript 原生ajax方法 function createXMLHttp() { var XmlHttp; if (window.ActiveXObject) { var arr = ["MSXML2.XMLHttp.6.0", "MSXML2.XMLHttp.5.0", "MSXML2.XMLHttp.4.0", "MSXML2.XMLHttp.3.0", "MSXML2.XMLHttp", "Microsoft.XMLHttp"]; for (var i = 0; i < arr.length; i++) { try { XmlHttp = new ActiveXObject(arr[i]); return XmlHttp; } catch (error) { } } } else { try { XmlHttp = new XMLHttpRequest(); return XmlHttp; } catch (otherError) { } } } function xmlPost() { var xmlHttp = createXMLHttp(); var queryStr = "Ajax_Type=Email&jsonData=" + JSON.stringify(jsonData); var url = "/Handler/AjaxHandlerHelper.ashx?no.=" + Math.random(); xmlHttp.open('Post', url, true); xmlHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded"); xmlHttp.send(queryStr); xmlHttp.onreadystatechange = function () { if (xmlHttp.readyState == 4 && xmlHttp.status == 200) { var data = eval(xmlHttp.responseText); Data(data, "javascript原生xmlHttp"); } } } </script> <script type="text/javascript"> //jquery $.ajax方法 function Ajax() { $.ajax({ url: "/Handler/AjaxHandlerHelper.ashx?no.=" + Math.random(), type: "Post", async: false, data: { Ajax_Type: "Email", jsonData: JSON.stringify(jsonData) }, dataType: "json", beforeSend: function () { //发送请求前 $("#btnPost").attr('disabled', "true"); }, complete: function () { //发送请求完成后 $("#btnPost").removeAttr("disabled"); }, error: function (XMLHttpRequest, textStatus, errorThrown) { alert("error!" + errorThrown); //alert("请求错误,请重试!"); }, success: function (data) { Data(data, "Jquery $.ajax"); } }); } //jquery $.post方法 function Post() { $.post("/Handler/AjaxHandlerHelper.ashx?no.=" + Math.random(), { Ajax_Type: "Email", jsonData: JSON.stringify(jsonData) }, function (data) { Data(data, "Jquery $.post"); } ); } //jquery $.getJSON方法 function GetJSON() { $.getJSON("/Handler/AjaxHandlerHelper.ashx?no.=" + Math.random(), { Ajax_Type: "Email", jsonData: JSON.stringify(jsonData) }, function (data) { Data(data, "Jquery $.getJSON"); } ); } //jquery $.get方法 function Get() { $.get("/Handler/AjaxHandlerHelper.ashx?no.=" + Math.random(), { Ajax_Type: "Email", jsonData: JSON.stringify(jsonData) }, function (data) { Data(data, "Jquery $.get"); } ); } </script> <script type="text/javascript"> //javascript原生脚本自定义jquery $.ajax方法 var CustomAjax = function (custom) { // 初始化 var type = custom.type; //type参数,可选 var url = custom.url; //url参数,必填 var data = custom.data; //data参数可选,只有在post请求时需要 var dataType = custom.dataType; //datatype参数可选 var success = custom.success; //回调函数可选 var beforeSend = custom.beforeSend; //回调函数可选 var complete = custom.complete; //回调函数可选 var error = custom.error; //回调函数可选 if (type == null) {//type参数可选,默认为get type = "get"; } if (dataType == null) {//dataType参数可选,默认为text dataType = "text"; } var xmlHttp = createXMLHttp(); // 创建ajax引擎对象 xmlHttp.open(type, url, true); // 打开 // 发送 if (type == "GET" || type == "get" || type == "Get") {//大小写 xmlHttp.send(null); } else if (type == "POST" || type == "post" || type == "Post") { xmlHttp.setRequestHeader("content-type", "application/x-www-form-urlencoded"); xmlHttp.send(data); } xmlHttp.onreadystatechange = function () { if (xmlHttp.readyState == 4 && xmlHttp.status == 200) { if (dataType == "text" || dataType == "TEXT") { if (success != null) { //普通文本 success(xmlHttp.responseText); } } else if (dataType == "xml" || dataType == "XML") { if (success != null) { //接收xml文档 success(xmlHttp.responseXML); } } else if (dataType == "json" || dataType == "JSON") { if (success != null) { //将json字符串转换为js对象 success(eval("(" + xmlHttp.responseText + ")")); } } } }; }; //自定义方法 function Custom() { CustomAjax({ type: "Post", url: "/Handler/AjaxHandlerHelper.ashx?no.=" + Math.random(), data: "Ajax_Type=Email&jsonData=" + JSON.stringify(jsonData), dataType: "json", success: function (data) { Data(data, "Custom自定义"); } }); } </script> </div> </body> </html>
.kod hujung belakang ashx
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Script.Serialization; using System.Runtime.Serialization.Json; using System.IO; using System.Text; namespace WebHTML5.Handler { /// <summary> /// AjaxHandlerHelper 的摘要说明 /// </summary> public class AjaxHandlerHelper : IHttpHandler { public void ProcessRequest(HttpContext context) { context.Response.ContentType = "application/json"; //context.Response.Charset = "utf-8"; var Ajax_Type = context.Request.QueryString["Ajax_Type"] == null ? context.Request.Form["Ajax_Type"] : context.Request.QueryString["Ajax_Type"]; switch (Ajax_Type) { case "Email": context.Response.Write(PostEmail(context)); break; default: context.Response.Write("[{\"Age\":28,\"Name\":\"张鹏飞\"}]"); break; } } public static string PostEmail(HttpContext context) { string semail = string.Empty; if (context.Request.HttpMethod == "GET") { semail = "[" + context.Request.QueryString["jsonData"] + "]"; } else { semail = "[" + context.Request.Form["jsonData"] + "]"; } return semail; } /// <summary> /// JSON序列化 /// </summary> public static string JsonSerializer<T>(T t) { DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T)); MemoryStream ms = new MemoryStream(); ser.WriteObject(ms, t); string jsonString = Encoding.UTF8.GetString(ms.ToArray()); ms.Close(); return jsonString; } /// <summary> /// JSON反序列化 /// </summary> public static T JsonDeserialize<T>(string jsonString) { DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(T)); MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes(jsonString)); T obj = (T)ser.ReadObject(ms); return obj; } public bool IsReusable { get { return false; } } } }
Pelanjutan kaedah Jquery
Mengenai sambungan kaedah Jquery, anda boleh google atau Baidu sendiri;