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  • AJAX技术其实就是多年前我就使用过的XMLHTTP

    AJAX技术其实就是多年前我就使用过的XMLHTTP:

    1)<BODY onload='setInterval("getDaytime()",(GetCookie("OA_RefreshTime"))==""?30000:GetCookie("OA_RefreshTime"));' >

    2)function getDaytime()
    {
     var agt = navigator.userAgent.toLowerCase();
        var is_ie = (agt.indexOf('msie') != -1);
        var is_ie5 = (agt.indexOf('msie 5') != -1);
     function handle_do_search ()
     {
      if (xmlhttp.readyState == 4)//request completed
      {
       if (xmlhttp.status == 200)//request successful
       {
        var requset = xmlhttp.responseText.split(",");
        document.getElementById("Maxnum").value=requset[1];
        getMaxnum();
       }
       else
       {
        //alert ('No server answer!');
       }
      }
     }
     var xmlhttp = null;
     if (is_ie)
     {
      var control = (is_ie5) ? "Microsoft.XMLHTTP" : "Msxml2.XMLHTTP";
      try
      {
       xmlhttp = new ActiveXObject(control);
       xmlhttp.onreadystatechange = handle_do_search;
      } catch(e)
      {
       //alert("You need to enable active scripting and activeX controls");
      }
     }
     else
     {
      xmlhttp = new XMLHttpRequest();
      xmlhttp.onload = handle_do_search;
      xmlhttp.onerror = handle_do_search;
     }
     xmlhttp.open("GET","<%=request.getContextPath()%>/getDB.jsp?time="+(new Date()), false);
     xmlhttp.send(null);
    }

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  • 原文地址:https://www.cnblogs.com/willpower/p/1109813.html
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