Pass a classic ASP session variable array to client side JavaScript?

Question

I have a session variable which is an array of integers, for example:

myArray{1,4,3,5,6,7,9,2,...n}

What I am trying to do is pass this in a session var <%=Session("myArray")%> to my client side JavaScript. I can do it if I take the session var and convert it to a string like this:

    var b = '<%=Session("myArray")%>';
    var bob = new Array();
    bob = b.split(',');

I am just wondering if there is a more direct way of passing the array possibly cutting out the need to convert it to a string before passing so I can just pass it as an array?

Thanks

I think things stored in the session are serialized, so it would be returned as a string. You could simplify your javascript code var bob = '<%=Session("myArray")%>'.split(","); — Prescott
– Prescott, Commented Mar 5, 2011 at 0:52
@Pre classic ASP session store the full object as-is, only Request and Cookies values are stored as pure string. — user447356
– user447356, Commented Mar 6, 2011 at 8:28

Kris Ivanov · Accepted Answer · 2011-03-05 00:50:55Z

1

you could parse the integers into something that is already an array, so you bob array woul be like that:

var bob = [<%=GetIntegersString(Session("myArray"))%>];

when the page is served to the client it should look like this:

var bob = [1,4,3,5,6,7,9];

the function GetIntegersString is something you will need to implement

answered Mar 5, 2011 at 0:50

Kris Ivanov

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user447356 · Accepted Answer · 2011-03-06 08:30:22Z

0

This should work just fine:

var bob = [<%=Join(Session("myArray"), ", ")%>];

answered Mar 6, 2011 at 8:30

user447356

1 Comment

flavour404 Over a year ago

This worked great when passing in an array which saved me converting the array to a string. Thanks.

Sebastián Grignoli · Accepted Answer · 2011-03-05 00:55:44Z

0

JSON is Javascript's way of expressing a literal value, so you could convert your array to json, and then assign it directly:

var bob = '<%=array_to_json(Session("myArray"))%>';

http://www.json.org recommends some ASP utilities to convert data to json:

http://tforster.wik.is/ASP_Classic_Practices_For_The_21st_Century/JSON4ASP
http://code.google.com/p/aspjson/
http://www.webdevbros.net/2007/04/26/generate-json-from-asp-datatypes/

Read more about JSON to know how to express any value as a literal in JS.

edited Mar 5, 2011 at 0:55

answered Mar 5, 2011 at 0:50

Sebastián Grignoli

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