jquery - Put a class depending on the data ajax datatables -


i searched alot , i'm extremely sure can done cannot find way it. use jquery datatables , i'm trying generate class , few javascript action depending on value i'm recieving. example, simple putting red background when unit negative, etc. created css , i'm loading json file via ajax parameters of datatables. here's javascript:

     table = $('#activitiestable').datatable({             "ajax": "data.txt",             "columns": [                 { "data": "id" },                 { "data": "description" },                 { "data": "type_of_expenditure" },                 { "data": "real_cost" }             ]         });

i know in columns parameters, can set class right after calling "classname" in json, i'm not sure how generate class comparing variable. example, i'd this:

      "columns": [             {                "data" : "id",                "classname": (data.id < 0 ? "negative" : "positive"))             }         ]

not sure if can done way? or if have check on jquery everytime ajax call launched feel lt initialized right there...

i found can use way:

                 {                      "data": "forcast_profit_loss",                     "createdcell": function (td, celldata, rowdata, row, col) {                       if ( celldata < 0 ) {                         $(td).addclass('number number-negative');                         $(td).text(celldata.substr(1));                       }                       else{                         $(td).addclass('number number-positive');                       }                     }                 }

you can find references right there: https://datatables.net/reference/option/columns.createdcell


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