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1 var xmlHttp 2 function showHint(str) { 3     if (str.length == 0) { 4         document.getElementById("txtHint").innerHTML = ""; 5         return; 6     } 7     xmlHttp =ttpObject() 8     if (xmlHttp == null) { 9         alert("您的浏览器不支持ajax");10         return;11     }12     var url = "getint.aspx";13     url = url + "?q=" + str;14     url += "&sid=" + Math.random();15     xmlHttp.onreadystatechange= stateChanged;16     xmlHttp.open("GET", url, true);17     xmlHttp.send(null);18         19 }20 function stateChanged() {21    22     if (xmlHttp.readyState == 4) {23         console.log(xmlHttp.responseText);24         document.getElementById("txtHint").innerHTML = xmlHttp.responseText;25        26     }27 }28 function ttpObject() {29     var xmlHttp = null;30     try{31         xmlHttp=new XMLHttpRequest();32 33     }34     catch (e) {35         try{36             xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");37         }38         catch (e) {39             xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");40 41         }42     }43     return xmlHttp;44 45 }

1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Web; 5 using System.Web.UI; 6 using System.Web.UI.WebControls; 7  8 namespace DemoItem 9 {10     public partial class getint : System.Web.UI.Page11     {12         protected void Page_Load(object sender, EventArgs e)13         {14             string q = Request.QueryString["q"].ToString();15             Response.Write(q);16             Response.End();//终止执行代码17 18         }19     }20 }