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(Classic ASP) JSON: Miscellaneous OperationsDemonstrates a variety of JSON API methods. This example uses the following JSON document:
{
"alphabet": "abcdefghijklmnopqrstuvwxyz",
"sampleData" : {
"pi": 3.14,
"apple": "juicy",
"hungry": true,
"withoutValue": null,
"answer": 42
}
}
<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> </head> <body> <% set json = Server.CreateObject("Chilkat_9_5_0.JsonObject") json.EmitCompact = 0 ' Assume the file contains the data as shown above.. success = json.LoadFile("qa_data/json/sample2.json") If (success <> 1) Then Response.Write "<pre>" & Server.HTMLEncode( json.LastErrorText) & "</pre>" Response.End End If ' First navigate to the "sampleData" object: ' sampleData is a Chilkat_9_5_0.JsonObject Set sampleData = json.ObjectOf("sampleData") ' Demonstrate BoolAt and BoolOf Response.Write "<pre>" & Server.HTMLEncode( "hungry: " & sampleData.BoolOf("hungry")) & "</pre>" Response.Write "<pre>" & Server.HTMLEncode( "hungry: " & sampleData.BoolAt(2)) & "</pre>" ' StringOf returns the value as a string regardless of it's actual type: Response.Write "<pre>" & Server.HTMLEncode( "pi: " & sampleData.StringOf("pi")) & "</pre>" Response.Write "<pre>" & Server.HTMLEncode( "answer: " & sampleData.StringOf("answer")) & "</pre>" Response.Write "<pre>" & Server.HTMLEncode( "withoutValue: " & sampleData.StringOf("withoutValue")) & "</pre>" Response.Write "<pre>" & Server.HTMLEncode( "hungry: " & sampleData.StringOf("hungry")) & "</pre>" ' Demonstrate IsNullOf / IsNullAt Response.Write "<pre>" & Server.HTMLEncode( "withoutValue is null? " & sampleData.IsNullOf("withoutValue")) & "</pre>" Response.Write "<pre>" & Server.HTMLEncode( "withoutValue is null? " & sampleData.IsNullAt(3)) & "</pre>" Response.Write "<pre>" & Server.HTMLEncode( "apple is null? " & sampleData.IsNullOf("apple")) & "</pre>" Response.Write "<pre>" & Server.HTMLEncode( "apple is null? " & sampleData.IsNullAt(1)) & "</pre>" ' IntOf Response.Write "<pre>" & Server.HTMLEncode( "answer: " & sampleData.IntOf("answer")) & "</pre>" ' SetNullAt, SetNullOf ' Set "pi" to null success = sampleData.SetNullAt(0) ' Set "answer" to null success = sampleData.SetNullOf("answer") ' Show the changes: Response.Write "<pre>" & Server.HTMLEncode( json.Emit()) & "</pre>" ' Restore pi and apple: success = sampleData.SetNumberAt(0,"3.14") success = sampleData.SetNumberOf("answer","42") ' Show the changes: Response.Write "<pre>" & Server.HTMLEncode( json.Emit()) & "</pre>" ' Add a null value named "afterApple" just after "apple" success = sampleData.AddNullAt(2,"afterApple") ' Add a boolean value just after "pi" success = sampleData.AddBoolAt(1,"afterPi",0) ' Examine the changes.. Response.Write "<pre>" & Server.HTMLEncode( json.Emit()) & "</pre>" %> </body> </html> |
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