How to create a session using JavaScript?

user_122677 0
Viewed 332044

How to create session in JavaScript?

I try like this: 

<script type="text/javascript" >
{
Session["controlID"] ="This is my session";
}
</script>

Why I looking for session?

I make a request for XML using AJAX. XML response I want to store in session and this session I want to pass to the server page(.asp). I mean to write something like:

<% response.write session("MySession")%>
session asp.net javascript
13 Answers

You can store and read string information in a cookie.

If it is a session id coming from the server, the server can generate this cookie. And when another request is sent to the server the cookie will come too. Without having to do anything in the browser.

However if it is javascript that creates the session Id. You can create a cookie with javascript, with a function like:

function writeCookie(name,value,days) {
    var date, expires;
    if (days) {
        date = new Date();
        date.setTime(date.getTime()+(days*24*60*60*1000));
        expires = "; expires=" + date.toGMTString();
            }else{
        expires = "";
    }
    document.cookie = name + "=" + value + expires + "; path=/";
}

Then in each page you need this session Id you can read the cookie, with a function like:

function readCookie(name) {
    var i, c, ca, nameEQ = name + "=";
    ca = document.cookie.split(';');
    for(i=0;i < ca.length;i++) {
        c = ca[i];
        while (c.charAt(0)==' ') {
            c = c.substring(1,c.length);
        }
        if (c.indexOf(nameEQ) == 0) {
            return c.substring(nameEQ.length,c.length);
        }
    }
    return '';
}

The read function work from any page or tab of the same domain that has written it, either if the cookie was created from the page in javascript or from the server.

To store the id:

var sId = 's234543245';
writeCookie('sessionId', sId, 3);

To read the id:

var sId = readCookie('sessionId')
user_1664910

I think you misunderstood the concept of session, session is a server side per-user-data-store which allows you to save user data on the server side.

thus, you have 2 options, resort to use cookies, which will give the illusion of session(but not quite the same), you can access cookies very simply by document.cookie .

but, if you want your server be aware of the session, you need to use some sort of server request probably the best way is to use AJAX to do this.

I would recommend you to re-read the definition of sessions.

user_2721850

You can use the name attr: 

<script type="text/javascript" >
{
window.name ="This is my session";
}
</script>

You still have to develop for yourself the format to use, or use a wrapper from an already existing library (mootools, Dojo etc).
You can also use cookies, but they are more heavy on performance, as they go back and forth from the client to the server, and are specific to one domain.

user_671530
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