CODEWITHSUNDEEP
javascriptpromisedatatablesyadcf
OverflowingTheGlass
OverflowingTheGlass

Reputation: 2434

How to Use JavaScript Promise to Access Variable Outside of Function

Desipite reading numerous answers related to this issue, I have not been able to understand how to implement Promises in my example. I have a DataTables table defined like this:

$(function () {
  var yadcf_data_3;
  var oTable = $('#example').DataTable({
    "serverSide": true,
    "ajax": {"url": "/platform/elements/?format=datatables",
             "dataSrc": function(json){
               yadcf_data_3 = json.options.yadcf_data_3
               //this line returns the appropriate list of values
               console.log(yadcf_data_3)
               return json.data;
              }
            }
          });

   //this line returns undefined
   console.log(yadcf_data_3)

   //other stuff      

  yadcf.exRefreshColumnFilterWithDataProp(oTable, 3, yadcf_data_3);
});

How do I use yadcf_data_3 to populate a filter for the table? yadcf_data_3 returns undefined outside of the oTable variable. I know I need to use Promises (instead of callbacks since Promises appear to be the future).

Upvotes: 0

Views: 143

Answers (0)

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