Get Current Server DateTime using JavaScript and XMLHTTP in ASP.Net

stellusm...

SOLVED CLOSED ACTIVE ANSWERED
User: stellusmca
Posted: on Aug 06, 2019 06:40 AM
Forum: JavaScript
Answer: 1
Views: 13644

Hi All,

i have changed my computer date from 8/2/2019 to 8/8/2019.

after changed the date then i try to login with my application from my local machine and i run the application in chrome browser but i can't able to login it just stay in the login page itself

even i reverted my computer date from 8/8/2019 to 8/2/2019 also but one think it is working fine with IE browser Not working with chrome or mozilla

So Currently my server time showing always 8/8/2019 in UI level (client side) but server side it showing currect date(today date).

So My question is How to fix date from wrong date to correct server date?

Do you have any idea for this?

var xmlHttp;
function srvTime(){
    try {
        //FF, Opera, Safari, Chrome
        xmlHttp = new XMLHttpRequest();
    }
    catch (err1) {
        //IE
        try {
            xmlHttp = new ActiveXObject('Msxml2.XMLHTTP');
        }
        catch (err2) {
            try {
                xmlHttp = new ActiveXObject('Microsoft.XMLHTTP');
            }
            catch (eerr3) {
                //AJAX not supported, use CPU time.
                alert("AJAX not supported");
            }
        }
    }
    xmlHttp.open('HEAD',window.location.href.toString(),false);
    xmlHttp.setRequestHeader("Content-Type", "text/html");
    xmlHttp.send('');
    return xmlHttp.getResponseHeader("Date");
}
 
var st = srvTime();
var date = new Date(st);

<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>Server date/time</title>
    <script language="javascript" src="serverDate.js"></script>
  </head>
  <script language="javascript">
  var localTime = new Date();
  document.write("Local machine time is: " + localTime + "<br>");
  document.write("Server time is: " + date);
  </script>
  <body>
  </body>
</html>

dharmend...

0 3

Reply
ANSWER
User: dharmendr
Replied: on Aug 06, 2019 08:44 AM
Modified: on Aug 06, 2019 08:50 AM
Report

Hi stellusmca,

To get the Current Server Time make AJAX call using JavaScript XMLHttp function.

Refer below article for more details.

HTML

<script type="text/javascript">
    var serverTime;
    var request;
    if (window.XMLHttpRequest) {
        //New browsers.
        request = new XMLHttpRequest();
    }
    else if (window.ActiveXObject) {
        //Old IE Browsers.
        request = new ActiveXObject("Microsoft.XMLHTTP");
    }
    if (request != null) {
        var url = "Default.aspx/GetCurrentDateTime";
        request.open("POST", url, false);
        request.setRequestHeader("Content-Type", "application/json");
        request.onreadystatechange = function () {
            if (request.readyState == 4 && request.status == 200) {
                serverTime = JSON.parse(request.responseText).d;
            }
        };
        request.send('');
    }

    var localTime = new Date();
    document.write("Local machine time is: " + localTime + "<br>");
    document.write("Server time is: " + new Date(serverTime));
</script>

[System.Web.Services.WebMethod]
public static string GetCurrentDateTime()
{
    return DateTime.Now.ToString();
}

VB.Net

<System.Web.Services.WebMethod()> _
Public Shared Function GetCurrentDateTime() As String
    Return DateTime.Now.ToString()
End Function

Output

Local machine time is: Tue Aug 06 2019 19:08:42 GMT-0800 (Pacific Standard Time)

Server time is: Tue Aug 06 2019 19:08:42 GMT-0800 (Pacific Standard Time)

JavaScript

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title>Server DateTime</title>
</head>
<body>
    <script type="text/javascript">
        var localTime = new Date();
        document.write("Local machine time is: " + localTime + "<br>");
        var st = srvTime();
        var date = new Date(st);
        document.write("Server time is: " + date);

        function srvTime() {
            var xmlHttp;
            if (window.XMLHttpRequest) {
                //FF, Opera, Safari, Chrome
                xmlHttp = new XMLHttpRequest();
            } else if (window.ActiveXObject) {
                //Old IE Browsers.
                xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
            }
            xmlHttp.open('HEAD', window.location.href, false);
            xmlHttp.setRequestHeader("Content-Type", "text/html");
            xmlHttp.send('');
            return xmlHttp.getResponseHeader("Date");
        }
    </script>
</body>
</html>

Demo

Get Current Server DateTime using JavaScript and XMLHTTP in ASP.Net

AJAX Calls Using JavaScript And XMLHTTP in ASP.Net

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