Date calculation

[neoinbiz]

I have a date field "Scheduled Completion Date" and I need to add a new column in the grid to display the number of days until "Scheduled Completion Date" from todays date

Here is code for "Scheduled Completion Date". What would I place under this as new column "Days Until Due"?

Code: [Select]

{ title: "Scheduled Completion Date", align:"center", dataIndx: "Step2aComplete",
     render: function(ui) {
      if(ui.rowData.Step2aComplete){
var usaDate = new Date(ui.rowData.Step2aComplete);
return usaDate.getMonth()+1 + "/" + usaDate.getDate() + "/" + usaDate.getFullYear();     
      }
}
}