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Add new value into json

Chuck Villavicencio
Chuck Villavicencio Published in 2018-02-13 17:08:39Z

I'm tiying to build an excel uploader app. Right now, I can get the data from the excel file and send it to an API to store the info.

But i need something else, and is to asign to each value the id of the excel, which i'll get after save it first.

This is how i get the excel data before store it:

$scope.loadWorksheet = function(e){

        var file = e.target.result;
        var workbook = XLSX.read(file, { type: "binary" });

        var sheetName = workbook.SheetNames[0];
        $scope.sheet = XLSX.utils.sheet_to_json(workbook.Sheets[sheetName]);




Let's say i get the next array:

[{Name: "Chuck", Age: "30"},
{Name: "Marcus", Age: "18"},
{Name: "Shelly", Age: "29"}]

How can i add to each record the id of the document?

Per example, after save the document i get on the response the id:

$scope.IdDocument = 15;

And what i need is to put it on every record, like this:

[{Name: "Chuck", Age: "30", DocumentId: "15"},
{Name: "Marcus", Age: "18" DocumentId: "15"},
{Name: "Shelly", Age: "29" DocumentId: "15"}]

There's a way to do that? Hope you can help me.

I'm using AngularJs and Javascript.

Sajeetharan Reply to 2018-02-13 17:10:28Z

You need forEach, with angularjs you can use angular.forEach


var array = [{Name: "Chuck", Age: "30"},
{Name: "Marcus", Age: "18"},
{Name: "Shelly", Age: "29"}];

array.forEach(function(obj) { obj.DocumentId = "15"; });


Punith Jain
Punith Jain Reply to 2018-02-13 17:16:48Z

You can just iterate over your array and add the field as follows

var people = [{Name: "Chuck", Age: "30"},
                  {Name: "Marcus", Age: "18"},
                  {Name: "Shelly", Age: "29"}
    people.forEach(p => p.DocumentId = "15");

brk Reply to 2018-02-13 17:15:54Z

Use map function.It will return the updated array

var oldArray = [{
    Name: "Chuck",
    Age: "30"
    Name: "Marcus",
    Age: "18"
    Name: "Shelly",
    Age: "29"

var newArray = oldArray.map(function(item) {
  item.DocumentId = '15';
  return item;



Hussain Reply to 2018-02-15 10:08:12Z

iterate over your array object using for loop

var people = [{Name: "Chuck", Age: "30"},
             {Name: "Marcus", Age: "18"},
             {Name: "Shelly", Age: "29"}];

 for(var i=0 ; i<people.length;i++){
      people[i].age = "10";
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