Accessing javascript object property

Question

I have an array of objects called user. So when I do console.log(user[0]); I get an output like : Object {activityId: "2", id: "1", activityDt: "01/15/2016"}

So then I decided to store the user[0] in a seprate object.

var p = user[0];

Now finally I want to get the activityId of the object so I do

console.log(p.activityId);

But nothing gets printed and I get an error. Please suggest.

My code

 mainFactory.getUser()
  .success(function(usersData) {
      $scope.userData = usersData;

      // Determine which events we will show (removce certain events)

      var userActivity = [];
      angular.forEach($scope.userData, function (user, index){

        // console.log(user.length);

        //for(var i = 0; i<user.length; i++){
        //   console.log(user[i]);
        // }

        // console.log(user[0]);
        var p = user[0];
        console.log(p.activityId);

        // for (var key in p) {
        //   alert(p[key]);
        // }




      });
    })
    .error(function(err) {
      console.log('Error: ' + err);
    });

Error

TypeError: Cannot read property 'activityId' of undefined
    at main.controller.js:54
    at Object.forEach (angular.js:334)
    at main.controller.js:44
    at angular.js:9433
    at processQueue (angular.js:13318)
    at angular.js:13334
    at Scope.$eval (angular.js:14570)
    at Scope.$digest (angular.js:14386)
    at Scope.$apply (angular.js:14675)
    at done (angular.js:9725)

Post more code, because that should work if things really are exactly as you describe. Are those lines of code one after the other in the program, or are they separated somehow? — Pointy
– Pointy, Commented Feb 27, 2016 at 18:33
@JanTojnar if i do console.log(p); i get same result as console.log(user[0]); — user1010101
– user1010101, Commented Feb 27, 2016 at 18:34
I've run those lines of code myself, and they do indeed work. We will need to see much more details of the code to help with this. Posting the error message would also be helpful. — millerbr
– millerbr, Commented Feb 27, 2016 at 18:35
inside angular.forEach, u are using var p = user[0];, it should be var p = user; — Vishal Rajole
– Vishal Rajole, Commented Feb 27, 2016 at 18:44

Simon H · Accepted Answer · 2016-02-27 18:47:30Z

2

once you have used forEach, you are getting individual elements of $scope.userData. Calling users as though an array will not work and user[0] will be undefined, as reported by your error

angular.forEach($scope.userData, function (user, index){
    var p = user;
    console.log(p.activityId);

edited Feb 27, 2016 at 18:47

answered Feb 27, 2016 at 18:43

Simon H

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5 Comments

user1010101 Over a year ago

Just a question though, basically i want to print id or say activityId of each individual how do i do that because doing var p = user is storing all the objects i think.

user1010101 Over a year ago

I just tried that -> console.log(p.activityId); i get undefined.

user1010101 Over a year ago

you mean do console.log(user) ?

user1010101 Over a year ago

[Object, Object, Object] is what i get when i do console.log(user)

Simon H Over a year ago

So you assert console.log(user[0]); gives Object {activityId: "2", id: "1", activityDt: "01/15/2016"} inside the forEach loop?

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