Question

I have a C# method which generates a JSON string that Google charts requires. The output of such would look a little like this:

[ [{ v: 'Mike', f: 'Mike' }, '', 'The President'], [{ v: 'Jim', f: 'Jim Vice President' }, 'Mike', 'VP'], ['Alice', 'Mike', ''], ['Bob', 'Jim', 'Bob Sponge'], ['Carol', 'Bob', ''] ]

I’m trying to retrieve this data from within my Javascript using getJSON and a method which returns a JsonResult. However, the Javascript will (correctly) not parse it as an array because I’m using a string.

How can I overcome this problem? I imagine I should be generating my C# JsonResult from an array, seeing as this is what the data is. However, Google’s format doesn’t exactly lend itself well to this…

Thanks in advance.

Answer 1

If the text can’t be made valid JSON, you may need to use eval…

var arr = eval(response_string);

Or have it eval’d using the Function constructor…

var arr = Function('return ' + response_string)();

…but in both cases, make sure you trust the data being sent.

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Both of these techniques will evaluate the string as JavaScript code, so whatever is sent will run as long as the JavaScript syntax is valid.