asp简单的ajax留言板(采用三层模式)(4)

'/// <summary>
  '/// 执行Recordset
  '/// </summary>
  '/// <param>连接字符</param>
  '/// <param>sql命令</param>
  '/// <returns>RS</returns>
  Public Function Recordset(connString,cmdText)

   Dim objConn,objRS
   Set objConn = Server.CreateObject("ADODB.Connection")
   objConn.Open connString
   Set objRS = Server.CreateObject("ADODB.RecordSet")
   objRS.Open cmdText,objConn,1,3
   Set Recordset = objRS

End Function

Private Sub Class_Initialize()
   CONN_STRING = "provider = microsoft.jet.oledb.4.0;data source=" & Server.Mappath("db.mdb")
  End Sub

End Class
%>
ajax.js

复制代码 代码如下:

var http_request = false;

function makeRequest(obj,url) {

    http_request = false;

    if (window.XMLHttpRequest) { // Mozilla, Safari,...
        http_request = new XMLHttpRequest();
        if (http_request.overrideMimeType) {
            http_request.overrideMimeType('text/xml');
        }
    } else if (window.ActiveXObject) { // IE
        try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
        } catch (e) {
            try {
            http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
        }
    }

    if (!http_request) {
        alert('Giving up :( Cannot create an XMLHTTP instance');
        return false;
    }

    http_request.onreadystatechange = function()
    {
        if (http_request.readyState == 4) {
            if (http_request.status == 200) {
                updateObj(obj,http_request.responseText);
            }
            else
            {
                updateObj(obj,"");
            }
        }
    }
    http_request.open('GET', url, true);
    http_request.send(null);
}

function updateObj(obj,data){
    obj.innerHTML = data;
}
function $(url){
    var obj = document.getElementById("content");
    obj.style.display='block';
    document.getElementById("container").style.margin="10px auto 0px";
    obj.innerHTML = "Loading…";
    makeRequest(obj,url);
}

html调用方法：

复制代码 代码如下:

<a href="#" onclick="$('news.html')">新闻</a><a href="#" onclick="$('product.html')">产品</a><a href="#" onclick="$('case.html')">案例</a><a href="#" onclick="$('contact.html')">联系</a><a href="http://zj55com.cnblogs.com/" target="_blank">博客</a>

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