ASPJSON is a free to use project for generating and reading JSON data into a classic ASP object.

The class can be used for reading a string of JSON data as well as writing JSON output from an AJAX file.
Below are 2 simple examples of both.

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<!--#include virtual="/aspJSON1.17.asp" -->
<%
Set oJSON = New aspJSON

'Load JSON string
oJSON.loadJSON(jsonstring)

'Get single value
Response.Write oJSON.data("firstName") & "<br>"

'Loop through collection
For Each phonenr In oJSON.data("phoneNumber")
    Set this = oJSON.data("phoneNumber").item(phonenr)
    Response.Write _
    this.item("type") & ": " & _
    this.item("number") & "<br>"
Next

'Update/Add value
oJSON.data("firstName") = "James"

'Return json string
Response.Write oJSON.JSONoutput()
%>






        
[INPUT]
{ "firstName": "John", "lastName" : "Smith", "age" : 25, "address" : { "streetAddress": "21 2nd Street", "city" : "New York", "state" : "NY", "postalCode" : "10021" }, "phoneNumber": [ { "type" : "home", "number": "212 555-1234" }, { "type" : "fax", "number": "646 555-4567" } ] }

Release 1.17 Februari 2014
- Efficiency improvement large data

Release 1.15 Februari 2014
- Trailing tabs fixed

Release 1.14 Februari 2014
- Colon value within string bug fixed

Release 1.13 December 2013
- Encoded data fix
- Now possible to load directly from a URL.
   For example: oJSON.loadJSON("http://www.aspjson.com/jsonstream.asp")

Release 1.12 June 2013
- vbCrLf fix
- Compatible with Option Explicit
- JSON escape characters