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How to post-process column values in jQuery DataTables

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Last Modified: 2016-03-31
 var table = $('#data-table').DataTable(
                {
                    ajax: {
                        type: 'GET',
                        url: '/temperature'

                    },
                    bFilter: false,
                    "bLengthChange": false,
                    aaSorting: [],
                    columns: [
                        {data: "t"},
                        {data: "c"}

                    ]
                }
            );

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I have the above code to consume some JSON data to populate a table using DataTables (https://datatables.net/). The JSON format is like below:
   
{data: [{t:1459192455326, c:2},{t: 1459192455326, c:3}]}

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.

So how can I do some post processing of the returned JSON (convert the timestamp to human readable form) in order to render the table?
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