Adding an item to an array in AngularJS: A step-by-step guide

Here is a snippet of code I have been working on:

$scope.studentDetails=[];

   $scope.studentIds={};
   $scope.studentIds[0]{"id":"101"}
   $scope.studentIds[1]{"id":"102"}
   $scope.studentIds[2]{"id":"103"}

Within the above code, when I select student id:101, I receive marks from services like:

   $scope.studentMarks={};
   $scope.studentMarks[0]{"marks":"67"}
   $scope.studentMarks[1]{"marks":"34"}

Next, when I select student id:102, I get marks from services as follows:

   $scope.studentMarks={};
   $scope.studentMarks[0]{"marks":"98"}
   $scope.studentMarks[1]{"marks":"85"}

Ultimately, my goal is to store student details in an array like this:

$scope.studentDetails=[{"id":"101","marks":[67,34]},{"id":"102","marks":[98,85]}]

And I am achieving this using AngularJS.

javascriptarraysangularjs

Answer №1

It appears that this question is more related to JavaScript rather than Angular.

Have you considered using the JavaScript push method?

$scope.updateStudentDetails.push({studentID: 201, scores: [89, 45]});

Answer №2

One way to expand an array is by utilizing the Array.extend function, which can append a single object or merge one array into another. Check out the provided resources for more information.

Answer №3

angularJS is a powerful tool that enhances the functionality of Javascript. By utilizing angularJS, you can easily manipulate arrays just like any other object in Javascript.

To begin, it is essential to initiate an array.

$scope.userIds = []; // Array of user ids.

Once the array is declared, you can add elements by using the push method:

$scope.userIds.push({id: "202"});

Answer №4

If you want to achieve this in a straightforward manner, you can iterate through the student IDs first and then go over the marks dataset to populate the studentDetails object only when the IDs match:

var studentDetails = [];

for (var id in studentIds) {
    var studentDetail = {}; // represents a single student
    var marks = [];    

    if (studentIds.hasOwnProperty(id)) {
        for (var mark in studentMarks) {
            if (studentMarks.hasOwnProperty(mark) && mark.id === id) {
                studentDetail.id = id;
                marks.push(mark.marks);
            }
        }
        studentDetail.marks = marks;
    }
    studentDetails.push(studentDetail);
}

$scope.studentDetails = studentDetails;

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