jQuery.parseJSON fails to parse serialised C# dictionary

Question

I am using this tutorial to serialise a C# dictionary. The C# dictionary gets serialized to a string. The @Html.Raw(new System.Web.Script.Serialization.JavaScriptSerializer().Serialize(ElementDivIDs)) works like a charm. This is the output I get,:

  var jsonString = {"9":["ele9-tabs-attr9","ele9-tabs-attr48"],"10":["ele10-tabs-attr10"],"11":["ele11-tabs-attr11"],"12":["ele12-tabs-attr12","ele12-tabs-attr49"],"13":["ele13-tabs-attr13"],"14":["ele14-tabs-attr14"]}

I want to convert this into a Javascript associative array. But the call to jquery.parseJSON returns NULL.

var dictionaryOfOtherDivs = jQuery.parseJSON( jsonString );

dictionaryOfOtherDivs is null after this.

Here's my code:

<script type="text/javascript">
$(document).ready(function () {
     var jsonString = @Html.Raw(new System.Web.Script.Serialization.JavaScriptSerializer().Serialize(ElementDivIDs))
     console.log(jsonString); 
     var dictionaryOfOtherDivs  = jQuery.parseJSON( jsonString ); 
     for(var dictKey in dictionaryOfOtherDivs)
     { 
        console.log("key = " + dictKey + ", value = " + dictionaryOfOtherDivs[dictKey]); 
     }
     //Do some more things
});
</script>

SLaks · Accepted Answer · 2012-05-31 13:09:37Z

6

That's not a JSON string; that's an ordinary object literal.

You don't need to parse it.

answered May 31, 2012 at 13:09

SLaks

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1 Comment

escist Over a year ago

Thanks. I thought that JavaScriptSerializer.Serialize() returns a string and not an object literal. I tested just now, I could use a for-in loop to access the key and value, and also access a specify value using jsonString[keyName]

Mattias Buelens · Accepted Answer · 2012-05-31 13:11:24Z

2

jQuery.parseJSON takes a string and outputs an object. However, you decided to inject the JSON itself right into the script, so the JavaScript engine will already have parsed it into an object literal, as if you'd have written that whole thing yourself as regular code.

Simply put, you already have a parsed object literal, you don't need to do any parsing anymore.

answered May 31, 2012 at 13:11

Mattias Buelens

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1 Comment

escist Over a year ago

Thanks Mattias for the explanation. Accepted SLaks' answer because it was first.

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