Get Current Session Value in JavaScript?

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I have a scenario where I open my web application in a browser but in two separate tabs.

In one tab I signed out from the application and as a result the all session values becomes null. While in the other tab I clicked on an anchor tag in the webapplication. In the anchor tag's jquery-on click event I have checked the session value. Here I am supposed to get the session as null(since I logged out the application from the other tab), but I am getting session value as logged in user(probably because no page refresh occurs).

My idea is to check the session on jQuery and if the session is null make the application logout,otherwise show a popup page..

Here's my code for getting the session value

   var session=var data = '@Session["UserName"]';
    //Show popup
    //Show loginpage


How can I get the current session value in jQuery?

The session is a server side thing, you cannot access it using jQuery. You can write an Http handler (that will share the sessionid if any) and return the value from there using $.ajax.

Get Current Session Value in JavaScript?, No, you can't. JavaScript is executed on the client side (browser), while the session data is stored on the server. However, you can expose  Most recent tries: var session = '<%= General.Session.departFlightID %>'; var session = '<%= HttpContext.Current.Session["departFlightID"] %>'; It does work if I set value on page load, but I am running a webmethod where I create a html and then send that html back to be populated inside a div to make a ticket there.

Another approach is in your chtml

<input type="hidden" id="hdnSession" data-value="@Request.RequestContext.HttpContext.Session['someKey']" />

  and the script is

var sessionValue= $("#hdnSession").data('value');

or you may access directly by

 jQuery(document).ready(function ($) {
        var value = '@Request.RequestContext.HttpContext.Session["someKey"]';

Using Javascript can you get the value from a session attribute set , Create a sessionStorage name/value pair with name="lastname" and example counts the number of times a user has clicked a button, in the current session:. When you click “Get session value” button, the session value is got and placed in textbox. You can even enter the value and click “Set Session value” to set the session value. As this is a static method, we are using HttpContext.Current.Session to handle session values. Below callAjaxMethod will call the server side method using Ajax.

Accessing & Assigning the Session Variable using Javascript:

Assigning the ASP.NET Session Variable using Javascript:

 <script type="text/javascript">
function SetUserName()
    var userName = "Shekhar Shete";
    '<%Session["UserName"] = "' + userName + '"; %>';
     alert('<%=Session["UserName"] %>');

Accessing ASP.NET Session variable using Javascript:

<script type="text/javascript">
    function GetUserName()

        var username = '<%= Session["UserName"] %>';
        alert(username );

Already Answered here

Window sessionStorage Property, In this, we are trying to get " UserName" session value client-side using Session property in JavaScript. Now, open the code behind file and write  Take hidden field with id or class and value with session and get it in javascript. Javascript var session = $('#session').val(); //get by jQuery

The way i resolved was, i have written a function in controller and accessed it via ajax on jquery click event

First of all i want to thank @Stefano Altieri for giving me an idea of how to implement the above scenario,you are absolutely right we cannot access current session value from clientside when the session expires.

Also i would like to say that proper reading of question will help us to answer the question carefully.

How To Use Session Value Client Side Using JavaScript In ASP.NET, You can't access session variables from the client, but you can render html that gives a javascript variable an initial value that equals what the  JavaScript is executed on the client side (browser), while the session data is stored on the server. However, you can expose session variables for JavaScript in several ways: a hidden input field storing the variable as its value and reading it through the DOM API

i tested this method and it worked for me. hope its useful.

assuming that you have a file named index.php and when the user logs in, you store the username in a php session; ex. $_SESSION['username'];

you can do something like this in you index.php file

<script type='text/javascript'>
  var userName = "<?php echo $_SESSION['username'] ?>"; //dont forget to place the PHP code block inside the quotation 

now you can access the variable userId in another script block placed in the index.php file, or even in a .js file linked to the index.php

ex. in the index.js file


it could be very useful, since it enables us to use the username and other user data stoerd as cookies in ajax queries, for updating database tables and such.

if you dont want to use a javascript variable to contain the info, you can use an input with "type='hidden';

ex. in your index.php file, write:

<?php echo "<input type='hidden' id='username' value='".$_SESSION['username']."'/>";

however, this way the user can see the hidden input if they ask the browser to show the source code of the page. in the source view, the hidden input is visible with its content. you may find that undesireble.

how to get session value from jquery, As this is a static method, we are using HttpContext.Current.Session to handle session values. 1. 2. 3. 4. 5. The localStorage and sessionStorage properties allow to save key/value pairs in a web browser. The sessionStorage object stores data for only one session (the data is deleted when the browser tab is closed). Tip: Also look at the localStorage property which stores data with no expiration date. The data will not be deleted when the browser is

How to get/set the value of a session variable using javascript/jQuery?, I have written following code let say in Page 1 <script type="text/javascript"> function setSessionValue() { var selectedCarNoideId = "1026";  Join a community of over 2.6m developers to have your questions answered on How to retrieve Session value from JavaScript of UI for ASP.NET AJAX General Discussions. New here? Start with our free trials.

set session value using javascript and retrieving the same using , Hi, In my current project, I am using Visual Studio 2008, .NET Framework 3.5 and Telerik 2011 Q1. On one of the web pages which use a  You can get and set session variable value from JavaScript in ASP.NET using Ajax ScriptManager ‘s PageMethods. To use this you need to add ScriptManger tag in your page and enable property EnablePageMethods=”True”. Check the below example to set and get session value in JavaScript using PageMethods.

How to retrieve Session value from JavaScript in UI for ASP.NET , How can we get the value of current session ID? Set your javascript timer to a 20 min. count down remembering every time the server is accessed the session time is reset. So each page load reset your javascript timer to the set session time out setting in IIS.

  • possible duplicate of…
  • set "UserName" as a cookie instead
  • No it returns the value of session instead of null
  • make sure that your session has the filled with value before loading the view.
  • That doesn't return the latest value of 'someKey' but the value when page has been initialized.
  • @SparAby you too write QUESTION TITLE carefully as you mentioned "Session Value in Javascript" hence i posted here!
  • How can one post an answer by reading the QUESTION TITLE alone.Please read the question also...
  • by reading your text here "we cannot access current session value from clientside when the session expires". i would like to know how to access session variable when it "EXPIRES"? NO! you cant access EXPIRED session right? ALSO i would like to say proper writing your post helps us to understand too..! :)
  • The question seems to be about .NET, not PHP.
  • Not relevant to the OP question...PHP does not qualify as a solution for a .Net question.
  • @SparAby, it's probably due to double quotes " not properly delimeted. You may try var username= "<%= Session[\"UserName\"]%>";