Getting session value in javascript

<script>
var someSession = '<%= Session["SessionName"].ToString() %>';
alert(someSession)
</script>

This code you can write in Aspx. If you want this in some js.file, you have two ways:

Make aspx file which writes complete JS code, and set source of this file as Script src
Make handler, to process JS file as aspx.

I tried following with ASP.NET MVC 5, its works for me

var sessionData = "@Session["SessionName"]";

For me this code worked in JavaScript like a charm!

<%= session.getAttribute("variableName")%>

hope it helps...

You can access your session variable like '<%= Session["VariableName"]%>'

the text in single quotes will give session value. 1)

<script>
var session ='<%= Session["VariableName"]%>'
</script>

2) you can take a hidden field and assign value at server;

hiddenfield.value= session["xyz"].tostring();

//and in script you access the hiddenfield  like

alert(document.getElementbyId("hiddenfield").value);

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