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  • 第六篇 ajax

    加载异步数据

    6-1 加载异步数据 

    XMLHttpRequest--传统的JavaScript方法实现Ajax功能

    6-1-a

    <!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>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>XMLHttpRequest--传统的JavaScript方法实现Ajax功能</title>
    <style type="text/css">
      body{ font-size:13px;}
      .divFrame{ width:260px; border:solid 1px #666;}
      .divFrame .divTitle{ padding:5px; background-color:#eee;}
      .divFrame .divContent{ padding:8px;}
      .divFrame .divContent .clsShow{ font-size:14px;}
      .btn{ border:#666 1px solid; padding:2px; width:80px;}
    </style>
    
    <script>
      var objXmlHttp = null //声明一个空的XMLHTTP变量
      
      function CreateXMLHttp()
      {
          //根据浏览器的不同,返回该变量的实体对象
          if(window.ActiveXObject)
          {
              objXmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
          }
          else
          {
              if(window.XMLHttpRequest)
              {
                  objXmlHttp = new XMLHttpRequest();
              }
              else
              {
                  alert("初始化XMLHTTP错误!");
              }
          }
      }
      
      
      function GetSendData()
      {
          //
          document.getElementById("divTip").innerHTML = "<img alt='' title='' src='' />";
          //
          var strSendUrl = "6-1-b.html?date=" + Date();
          //
          CreateXMLHttp();
          //
          objXmlHttp.open("GET",strSendUrl,true);
          objXmlHttp.onreadystatechange = function()
          {
              if(objXmlHttp.readyState == 4)
              {
                  if(objXmlHttp.statue == 200)
                  {
                      //
                      document.getElementById("divTip").innerHTML = objXmlHttp.responseText;
                  }
              }
          }
          //
          objXmlHttp.send(null);
      }
      
    </script>
    </head>
    <body>
    
      <div class="divFrame">
        <div class="divTitle">
          <input id="Button1" type="button" onclick="GetSendData()" class="btn" value="获取数据" />
        </div>
        <div class="divContent">
          <div id="divTip"></div>
        </div>
      </div>
    
    </body>
    </html>

    6-1-b

    <!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>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>无标题文档</title>
    <style type="text/css">
    </style>
    <script type="text/javascript" src="js/jquery-1.12.3.min.js"></script>
    <script>
    </script>
    </head>
    <body>
      <div class="clsShow">
        姓名:陶国荣<br />
        性别:男<br />
        邮箱:tao_guo_rong@163.com
      </div>
    </body>
    </html>

    6-2 jQuery:load()方法

    load(url,[data],[callback]) --获取异步数据
    --url:被加载的页面技术
    --[data]:表示发送到服务器的数据,格式为:key/value
    --[callback]:回调函数

    <!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></title>
        <style type="text/css">
      body{ font-size:13px;}
      .divFrame{ width:260px; border:solid 1px #666;}
      .divFrame .divTitle{ padding:5px; background-color:#eee;}
      .divFrame .divContent{ padding:8px;}
      .divFrame .divContent .clsShow{ font-size:14px;}
      .btn{ border:#666 1px solid; padding:2px; width:80px;}
    </style>
        <script src="Scripts/jquery-1.4.1.min.js" type="text/javascript"></script>
        <script type="text/javascript">
            $(function () {
                //load(url,[data],[callback]) --获取异步数据
                //url--被加载的页面技术
                //[data]--表示发送到服务器的数据,格式为:key/value
                //[callback]--回调函数
                $("#Button1").click(function () {
                    $("#divTip").load("a.htm .clsShow", function (data) {
                        $("#divTip").html(data)
                    });
                    //a.htm .clsShow a.htm页面中类别名为.clsShow的全部元素
                    //$("#divTip").load("a.htm");
                });
            })
        </script>
    </head>
    <body>
      <h2>6-2-a</h2>
      <div class="divFrame">
        <div class="divTitle">
          <input id="Button1" type="button" class="btn" value="获取数据" />
        </div>
        <div class="divContent">
          <div id="divTip"></div>
        </div>
      </div>
    </body>
    </html>

    6-3 getJSON()

    <!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>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>getJSON</title>
    <style type="text/css">
      body{ font-size:13px;}
      .divFrame{ width:260px; border:solid 1px #666;}
      .divFrame .divTitle{ padding:5px; background-color:#eee;}
      .divFrame .divContent{ padding:8px;}
      .divFrame .divContent .clsShow{ font-size:14px;}
      .btn{ border:#666 1px solid; padding:2px; width:80px;}
    </style>
    <script type="text/javascript" src="js/jquery-1.12.3.min.js"></script>
    <script>
      $(function(){
        //*******
        //JSON文件格式--一种轻量级的数据交互格式
        //$.getJSON(url,[data],[callback])
        //--url:被加载的页面技术
        //--[data]:表示发送到服务器的数据,格式为:key/value
        //--[callback]:回调函数
        $("#Button1").click(function(){
          //
          $.getJSON('demo.js',function(date){
            $("#divTip").empty();
            var strHTML="";
            $.each(date,function(InfoIndex,Info){
              strHTML += "姓名:" + Info["name"] + "<br>";
              strHTML += "性别:" + Info["sex"] + "<br>";
              strHTML += "邮箱:" + Info["email"] + "<hr>";
            })
            $("#divTip").html(strHTML);
          })
        })
      })
    </script>
    </head>
    <body>
      <h2>6-3:getJSON</h2>
      <div class="divFrame">
        <div class="divTitle">
          <input id="Button1" type="button" class="btn" value="获取数据" />
        </div>
        <div class="divContent">
          <div id="divTip"></div>
        </div>
      </div>
    </body>
    </html>

    6-4  getScript()

    全局函数getScript()获取.js文件的内容.

    <!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>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>getScript</title>
    <style type="text/css">
      body{ font-size:13px;}
      .divFrame{ width:260px; border:solid 1px #666;}
      .divFrame .divTitle{ padding:5px; background-color:#eee;}
      .divFrame .divContent{ padding:8px;}
      .divFrame .divContent .clsShow{ font-size:14px;}
      .btn{ border:#666 1px solid; padding:2px; width:80px;}
    </style>
    <script type="text/javascript" src="js/jquery-1.12.3.min.js"></script>
    <script>
      //******
      //$.getScript(url,[callback])
      
      $(function(){
        //
        $("#Button1").click(function(){
          //
          $.getScript("UserInfo.js",function(){
                $("#test").html("ok!");
              });
        })
      })
    </script>
    </head>
    <body>
    
      <h2>6-4:getScript</h2>
      <div class="divFrame">
        <div class="divTitle">
          <input id="Button1" type="button" class="btn" value="获取数据" />
        </div>
        <div class="divContent">
          <div id="divTip"></div>
          <div id="test"></div>
        </div>
      </div>
    
    </body>
    </html>

    js文件

    // JavaScript Document
    var data =[
      {
        "name":"吴者然",
        "sex":"男",
        "email":"demo1@123.com"
      },
      {
        "name":"吴中者",
        "sex":"男",
        "email":"demo2@123.com"
      },
      {
        "name":"何开",
        "sex":"女",
        "email":"demo3@123.com"
      },
      {
          "name":"zq",
          "sex":"man",
          "email":"zq@zq.com"
      }
    ]
    var strHTML="";
    $.each(data,function(){
      strHTML += "姓名:" + this["name"] + "<br>";
      strHTML += "性别:" + this["sex"] + "<br>";
      strHTML += "邮箱:" + this["email"] + "<hr>";
    });
    $("#divTip").html(strHTML);

    6-5  异步加载XML文档

    $.get(url,[data],[callback],[type])

    --url:加载的数据地址

    --[data]:发送到服务器的数据,key/value

    --[callback]:加载成功时执行的回调函数

    --[type]:返回数据的格式--html,xml,js,json,text

    <!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>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>get()--XML</title>
    <style type="text/css">
      body{ font-size:13px;}
      .divFrame{ width:260px; border:solid 1px #666;}
      .divFrame .divTitle{ padding:5px; background-color:#eee;}
      .divFrame .divContent{ padding:8px;}
      .divFrame .divContent .clsShow{ font-size:14px;}
      .btn{ border:#666 1px solid; padding:2px; width:80px;}
    </style>
    <script type="text/javascript" src="js/jquery-1.12.3.min.js"></script>
    <script>
      $(function(){
        $("#Button1").click(function(){
          //打开文件,并通过回调函数处理获取的数据
          $.get("UserInfo.xml",function(data){
            var strHTML="";
            $(data).find("User").each(function() {
               var $strUser = $(this);
               strHTML += "姓名:" + $strUser.find("name").text()+"<br>";
               strHTML += "性别:" + $strUser.find("sex").text()+"<br>";
               strHTML += "邮箱:" + $strUser.find("email").text()+"<hr>";
            });
            $("#divTip").html(strHTML);
          });
        })
      })
    </script>
    </head>
    <body>
    
      <h2>6-5:XML</h2>
      <div class="divFrame">
        <div class="divTitle">
          <input id="Button1" type="button" class="btn" value="获取数据" />
        </div>
        <div class="divContent">
          <div id="divTip"></div>
          <div id="test"></div>
        </div>
      </div>
    
    </body>
    </html>

    xml:

    <?xml version="1.0" encoding="utf-8"?>
    <Info>
      <User id ="1">
        <name>qq</name>
        <sex>male</sex>
        <email>qq@qq.com</email>
      </User>
      <User id ="2">
        <name>ww</name>
        <sex>female</sex>
        <email>ww@ww.com</email>
      </User>
    </Info>

    请求服务器数据

    6-6 $.get()向服务器请求数据

    ***客户端向服务器传递参数时,使用的格式是{key0:value0,key1:value1,.......},"key0"为参数名称,"value0"为参数的值。

    ***如果参数的值是中文格式,必须通过使用encodeURI()进行转码,当然,在客户端接受时,使用decodeURL()进行解码。

    <!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>get</title>
        <style type="text/css">
      body{ font-size:13px;}
      .divFrame{ width:260px; border:solid 1px #666;}
      .divFrame .divTitle{ padding:5px; background-color:#eee;}
      .divFrame .divContent{ padding:8px;}
      .divFrame .divContent .clsShow{ font-size:14px;}
      .btn{ border:#666 1px solid; padding:2px; width:80px;}
            #txtName
            {
                width: 122px;
            }
        </style>
        <script src="Scripts/jquery-1.4.1.min.js" type="text/javascript"></script>
        <script type="text/javascript">
    
            $(function () {
                $("#Button1").click(function () {
                    //打开文件,并通过回调函数返回服务器响应后的数据
                    $.get("UserInfo.aspx", {
                        name: encodeURI($("#txtName").val())
                    }, function (data) {
                        $("#divTip").empty().html(data);
                    });
                });
            })
            
        </script>
    
    </head>
    <body>
    
      <h2>6-6:get()</h2>
      <div class="divFrame">
        <div class="divTitle">
          姓名:<input id="txtName" type="text"  /><input id="Button1" type="button" class="btn" value="获取数据" />
        </div>
        <div class="divContent">
          <div id="divTip"></div>
          <div id="test"></div>
        </div>
      </div>
    
    </body>
    </html>

    服务器端文件

    <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="UserInfo.aspx.cs" Inherits="WebApplication1.UserInfo" %>
    
    <%
    
        string strName = System.Web.HttpUtility.UrlDecode(Request["name"]);
        string strHTML = "<div class='clsShow'>";
        if (strName == "qq")
        {
            strHTML += "name:qq<br>";
            strHTML += "sex:qq<br>";
            strHTML += "mail:qq@qq.com<hr>";
        }
        else if (strName == "ww")
        {
            strHTML += "name:ww<br>";
            strHTML += "sex:ww<br>";
            strHTML += "mail:ww@ww.com<hr>";
        }
        else
        {
            strHTML += "没有找到!<hr>";
        }
        strHTML += "</div>";
        Response.Write(strHTML);
        
         %>

    6-7  $.post()

    **$.get()与$.post()区别:

    **GET方式不适合传递数据量较大的数据,其请求的历史信息会保存在浏览器的缓存中;POST则不存在

    --$.post(url,[data],[callback],[type])

    <!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>post</title>
         <style type="text/css">
      body{ font-size:13px;}
      .divFrame{ width:260px; border:solid 1px #666;}
      .divFrame .divTitle{ padding:5px; background-color:#eee;}
      .divFrame .divContent{ padding:8px;}
      .divFrame .divContent .clsShow{ font-size:14px;}
      .btn{ border:#666 1px solid; padding:2px; width:80px;}
            #txtName
            {
                width: 122px;
            }
         </style>
        <script src="Scripts/jquery-1.4.1.min.js" type="text/javascript"></script>
        <script type="text/javascript">
            $(function () {
                $("#Button1").click(function () {
                    //
                    $.post("UserInfo.aspx", {
                        name: encodeURI($("#txtName").val())
                    }, function (data) {
                        $("#divTip").empty().html(data);
                    });
                });
            })
        </script>
    </head>
    <body>
      <h2>6-7:post()</h2>
      <div class="divFrame">
        <div class="divTitle">
          姓名:<input id="txtName" type="text"  /><input id="Button1" type="button" class="btn" value="获取数据" />
        </div>
        <div class="divContent">
          <div id="divTip"></div>
          <div id="test"></div>
        </div>
      </div>
    </body>
    </html>

    6-8  serialize()序列化表单

    **serialize()方法可以很完美地模拟浏览器提交表单的操作,同时自动解决了中文编码的问题,但它自身有很多不足,如表单中有多项被选中时,该方法只能传递一项的值。因此,在选择传递参数时,须慎重考虑。

    <!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>serialize()序列化表单</title>
         <style type="text/css">
         body{ font-size:13px;}
        .divFrame{ width:260px; border:solid 1px #666;}
        .divFrame .divTitle{ padding:5px; background-color:#eee;}
        .divFrame .divContent{ padding:8px;}
        .divFrame .divContent .clsShow{ font-size:14px;}
        .btn{ border:#666 1px solid; padding:2px; width:80px;}
         </style>
        <script src="Scripts/jquery-1.4.1.min.js" type="text/javascript"></script>
        <script type="text/javascript">
            $(function () {
                $("#Button1").click(function () {
                    //
                    //serialize()序列化表单
                    $.post("UserInfo2.aspx", $("#frmUserInfo").serialize(),
                    function (data) {
                    $("#divTip").empty().html(data);
                    });
                    /*
                    $.post("UserInfo2.aspx", {
                        name: encodeURI($("#txtName").val()),
                        sex:encodeURI($("#txtSex").val())
                    }, function (data) {
                        $("#divTip").empty().html(data);
                    });
                    */
                });
            })
        </script>
    </head>
    <body>
    <h2>6-8:serialize()</h2>
     <form id="frmUserInfo">
      <div class="divFrame">
        <div class="divTitle">
          姓名:<input id="txtName" type="text"  /><br />
           邮箱:<input id="txtSex" type="text"  /><br />
          <input id="Button1" type="button" class="btn" value="获取数据" />
        </div>
        <div class="divContent">
          <div id="divTip"></div>
          <div id="test"></div>
        </div>
      </div>
      </form>
    </body>
    </html>

    $.ajax()方法

    6-9  $.ajax([options])

    **参数

    --url:string 发送请求的地址

    --type:string 数据请求方式(post/get),默认是get

    --data:string/object 发送到服务器的数据,字符串格式(get:字符串在URL后面)

    --dataType:string 服务器返回的数据类型。html,script,text,xml,json

    --beforeSend:function 

    --complete:function 请求完成后调用的回调函数

    --success:function 请求成功后调用的回调函数,有两个参数,一个是根据参数dataType处理后服务器返回的数据,另一个是strStatus,用于描述成功请求类型的字符串

    --error:function 请求失败后调用的回调函数

    --timeout:Number 请求超时的时间(毫秒)

    --global:boolean 是否响应全局事件

    --async:boolean 是否为异步请求,true,false

    --cache:boolean 是否进行页面缓存,true,false

    Login.htm

    <!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></title>
        <style type="text/css">
      body{ font-size:13px;}
      .divFrame{ width:260px; border:solid 1px #666;}
      .divFrame .divTitle{ padding:5px; background-color:#eee;}
      .divFrame .divContent{ padding:8px;}
      .divFrame .divContent .clsShow{ font-size:14px;}
      .btn{ border:#666 1px solid; padding:2px; width:80px;}
         </style>
        <script src="Scripts/jquery-1.4.1.min.js" type="text/javascript"></script>
        <script type="text/javascript">
            $(function () {
    
                $("#btnLogin").click(function () {
                    var userName = encodeURI($("#txtName").val());
                    var userPass = encodeURI($("#txtPass").val());
    
                    $.ajax({
                        url: "Login.aspx",
                        typr:"post",
                        dataType: "text",
                        data: { txtName: encodeURI($("#txtName").val()), txtPass: encodeURI($("#txtPass").val()) },
                        success: function (data) {
                            if (data == "1") {
                                $("#divError").show().html("ok!");
                                //alert(data);
                            }
                            else {
                                //alert(data);
                                $("#divError").show().html("error!");
                            }
                        }
                    })
                });
            })
        </script>
    
    </head>
    
    <body>
    
    <div class="divFrame">
      <div class="divTitle">
        <span>用户登录</span>
      </div>
    
      <div class="divContent">
        <div class="clsShow">
          <div id="divError" class="clsError"></div>
          <div>名称:<input id="txtName" type="text" class="txt" /></div>
          <div>密码:<input id="txtPass" type="text" class="txt" /></div>
    
          <div>
            <input id="btnLogin" type="button" value="登录" class="btn" />&nbsp;
            <input id="btnReset" type="button" value="取消" class="btn" />
          </div>
    
        </div>
      </div>
    </div>
    
    </body>
    </html>

    Login.aspx

    <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Login.aspx.cs" Inherits="WebApplication1.Login" %>
    
    <%
          
        string strName = System.Web.HttpUtility.UrlDecode(Request["txtName"]);
        string strPass = System.Web.HttpUtility.UrlDecode(Request["txtPass"]);
        var blnLogin = 0;
        if (strName == "admin" && strPass == "admin")
        {
            blnLogin = 1;
        }
        Response.Write(blnLogin);
          
           %>

    **$.ajax()方法时jQuery中最底层的方法,全局函数$.getScript(),$.get(),$.post(),$.getJSON()都可以用$.ajax()方法进行代替。

    6-10  $.ajaxSetup()设置全局Ajax

    **$.ajaxSetup([options]) , [options]是一个对象,通过该对象可以设置$.ajax()方法中的参数。

    <!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>$.ajaxSetup()方法全局设置ajax</title>
         <style type="text/css">
      body{ font-size:13px;}
      .divFrame{ width:260px; border:solid 1px #666;}
      .divFrame .divTitle{ padding:5px; background-color:#eee;}
      .divFrame .divContent{ padding:8px;}
      .divFrame .divContent .clsShow{ font-size:14px;}
      .btn{ border:#666 1px solid; padding:2px; width:80px;}
         </style>
        <script src="Scripts/jquery-1.4.1.min.js" type="text/javascript"></script>
        <script type="text/javascript">
            $(function () {
                //全局设置
                $.ajaxSetup({
                    type: "GET",
                    url: "UserInfo.xml",
                    dataType: "xml"
                });
    
                $("#Button1").click(function () {
                    success: function (data) {
                        //ShowData(data, "姓名", "name");
                        $("#divTip").html("姓名");
                    }
                });
                $("#Button2").click(function () {
                    success: function (data) {
                        //ShowData(data, "性别", "sex");
                        $("#divTip").html("性别");
                    }
                });
                $("#Button3").click(function () {
                    success: function (data) {
                        //ShowData(data, "邮箱", "email");
                        $("#divTip").html("邮箱");
                    }
                });
    
                /*
                *showData
                *d为请求响应后的数据
                *n为数据中文说明字符
                *v为数据在响应数据中的元素名称
                */
                function ShowData(d, n, v) {
                    $("#divTip").empty();
                    var strHTML = "";
                    $(d).find("User").each(function () {
                        var $strUser = $(this);
                        strHTML += n + ":" + $strUser.find(v).text() + "<hr>";
                    });
                    $("#divTip").html(strHTML);
                }
            })
        </script>
    </head>
    <body>
    
     <div class="divFrame">
       <div class="divTitle">
         <span><input id="Button1" value="姓名" type="button" class="btn" /></span>
         <span><input id="Button2" value="性别" type="button" class="btn" /></span>
         <span><input id="Button3" value="邮箱" type="button" class="btn" /></span>
       </div>
       <div class="divContent">
         <div id="divTip" class="clsShow"></div>
       </div>
     </div>
    
    </body>
    </html>

    UserInfo.xml

    <?xml version="1.0" encoding="utf-8" ?>
    
    <Info>
      <User id ="1">
        <name>qq</name>
        <sex>male</sex>
        <email>qq@qq.com</email>
      </User>
      <User id ="2">
        <name>ww</name>
        <sex>female</sex>
        <email>ww@ww.com</email>
      </User>
    </Info>

    Ajax中的全局事件

    --ajaxComplete(callback)

    --ajaxError(callback)

    --ajaxSend(callback)

    --ajaxStart(callback)

    --ajaxStop(callback)

    --ajaxSuccess(callback)

    <!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中的全局事件</title>
         <style type="text/css">
      body{ font-size:13px;}
      .divFrame{ width:260px; border:solid 1px #666;}
      .divFrame .divTitle{ padding:5px; background-color:#eee;}
      .divFrame .divContent{ padding:8px;}
      .divFrame .divContent .clsShow{ font-size:14px;}
      .clsTip{ display:none;}
      .btn{ border:#666 1px solid; padding:2px; width:80px;}
             #txtData
             {
                 width: 115px;
             }
         </style>
        <script src="Scripts/jquery-1.4.1.min.js" type="text/javascript"></script>
        <script type="text/javascript">
            $(function () {
                //
                $("#divMsg").ajaxStart(function () {
                    $(this).show();
                });
    
                $("#divMsg").ajaxStop(function () {
                    $(this).html("已成功获取数据").hide(2000);
                });
    
                $("#Button1").click(function () {
                    $.ajax({
                        type: "GET",
                        url: "GetData.aspx",
                        data: { txtData: encodeURI($("#txtData").val()) },
                        dataType: "html",
                        success: function (data) {
                            var str = decodeURI(data).substr(0, 2);
                            $("#divTip").html(str);
                        }
                    });
                });
            })
        </script>
    </head>
    <body>
    
       <div class="divFrame">
       <div class="divTitle">
         <span>数据:<input id="txtData" type="text" /></span>
         <span><input id="Button1" type="button" value="发送" class="btn" /></span>
         
       </div>
       <div class="divContent">
         <div id="divMsg" class="clsTip"></div>
         <div id="divTip" class="clsShow"></div>
       </div>
     </div>
    
    </body>
    </html>
    GetData.aspx
    <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="GetData.aspx.cs" Inherits="WebApplication1.GetData" %>
    
    <%
        
        string strName = Request["txtData"];
        Response.Write(strName);
         %>
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  • 原文地址:https://www.cnblogs.com/youguess/p/6872432.html
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