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How to call JSON methods inside fiddler script?

Hi there, what's the correct way to call:

JSON.stringify({});

JSON.parse("{}");

after calling these JSON methods, fiddler says:

Variable 'JSON' has not been declared

cheers,

David

David Henrry Ticona
Nov 21 2017
Under review

Bug

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Eric Lawrence commented

November 21, 2017 22:54

The JSON object you're trying to use is a part of the browser's Document Object model and doesn't directly exist within FiddlerScript. The .NET framework (on which FiddlerScript runs) offers a variety of JSON libraries and one of them may be your best choice.

Having said that, Fiddler does itself have its own JSON objects; they're not optimized for FiddlerScript, however, so you might find them a little cumbersome. At the top of your script, add:

using Fiddler.WebFormats;

In the code, add e.g.

var oResponseBody = oSession.GetResponseBodyAsString();

JSON.JSONParseResult oJSON = JSON.JsonDecode(oResponseBody) as JSON.JSONParseResult;

Hashtable oObj = oJSON.JSONObject as Hashtable;

var oVal = (oObj != null) ? oObj["myObjectValue"] : null;

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