How Do I Sum the Total Of The Column Values If some Row Value Is Not Available in Angularjs?

I am using MEAN stack in my application with AngularJS as my front-end. How to total sum column values, if some row value is not available in table, actually I got the total sum value but sum ~row value is not available~ the totalsum is showing like NaN...My Plunker For Example :- in table all row value is available means amt values total sum answer I got 5775.30, then in table if some row value is not available means amount payment values total sum showing like NaN, Expecting answer like 200 , If any one knows the solution help to us thanks....

In table column all values is available we got exact answer and total sum also.
But in table, a single row value of amount payment is not available means the total sum values is showing like NaN ... so wt we expecting if the some row value is not available the total sum should be calculate rest of the values ...expecting amount payment answer like 200...please look at my plunker

My controller:-

    .filter('sumOfValue', function () {
    return function (data, key) {
        debugger;
        if (angular.isUndefined(data) && angular.isUndefined(key))
            return 0;        
        var sum = 0;

        angular.forEach(data,function(v,k){
            sum = sum + parseFloat(v[key]);
        });        
        return sum.toFixed(2);
    }
})

My Html:-

<td >{{mani.amt}}</td>

  <td >{{mani.amount_payment }}</td>

My Data:-

        {
    "_id": "5816f4fad0be79f809519f98",
    "user": {
    "_id": "57400c32bd07906c1308e2cf",
    "displayName": "mani selvam"
    },
    "__v": 0,
    "created": "2016-10-31T07:38:34.999Z",
    "remarks": "-",
    "status": "pending",
    "amt": "1925.10",
    "cheque_currency": "Rs",
    "cheque_value": "300",
    "amount_payment": "1,925.10",
    "debitnote_no_payment": "3",
    "supplier_name": "karikalan",
    "buyer_name": "Manidesigns"
    },

    {
    "_id": "5816f4fad0be79f809519f98",
    "user": {
    "_id": "57400c32bd07906c1308e2cf",
    "displayName": "mani selvam"
    },
    "__v": 0,
    "created": "2016-10-31T07:38:34.999Z",
    "remarks": "-",
    "status": "pending",
    "amt": "1925.10",
    "cheque_currency": "Rs",
    "cheque_value": "300",
    "amount_payment": "1,925.10",
    "debitnote_no_payment": "3",
    "supplier_name": "karikalan",
    "buyer_name": "Manidesigns"
    },

  {
"_id": "5816f4fad0be79f809519f98",
"user": {
"_id": "57400c32bd07906c1308e2cf",
"displayName": "mani selvam"
},
"__v": 0,
"created": "2016-10-31T07:38:34.999Z",
"remarks": "-",
"status": "pending",
"amt": "1925.10",
"cheque_currency": "Rs",
"cheque_value": "300",
"amount_payment": "",
"debitnote_no_payment": "3",
"supplier_name": "karikalan",
"buyer_name": "Manidesigns"
},

I have created Plunker for reference:- Plunker

Solution

Changed some code of your: Check for isNAN function of javascript

angular.forEach(data, function(v, k) {

  var keyval;
  if(isNaN(parseFloat(v[key])))
  keyval=0;
  else
  keyval=parseFloat(v[key]);
  sum = sum + keyval;
});