What is the best way to combine two arrays into a single array using AngularJS?

Question

What is the best way to combine two arrays into a single array using AngularJS?

Here is a code snippet:

$scope.studentDetails=[];

$scope.studentDetails=[0][id:101,name:one]
                      [1][id:102,name:two]
                      [2][id:103,name:three] 

$scope.studentMarks=[];

$scope.studentMarks=[0][id:101,marks:78]
                    [1][id:102,marks:89]

I have two arrays. The first array contains properties like id and name, while the second array contains properties like id and marks. I need to combine these two arrays into one single array with the desired output:

$scope.studentDetails=[0][id:101,name:one,marks:78]
                      [1][id:102,name:two,marks:89]
                      [2][id:103,name:three,marks:null]

javascript angularjs underscore.js

Answer 1

Answer №1

Using Lodash's zip() function should accomplish that task, assuming your JavaScript code is correct to begin with.


$scope.dataCombined = _.zip($scope.studentInfo, $scope.studentGrades);

Answer 2

Using Lodash's zip() function should accomplish that task, assuming your JavaScript code is correct to begin with.


$scope.dataCombined = _.zip($scope.studentInfo, $scope.studentGrades);

Answer 3

Answer №2

I have found the solution

let studentsArray = [];
_.each($scope.studentDetails, function(student) {
  let data = _.findWhere($scope.studentMarks, {"id": student.id});
  if (!_.isUndefined(data)) {
    studentsArray.push({id: student.id, name: student.name, marks: data.marks});
  } else {
    studentsArray.push({id: student.id, name: student.name, marks: "null"});
  }
}

Answer 4

I have found the solution

let studentsArray = [];
_.each($scope.studentDetails, function(student) {
  let data = _.findWhere($scope.studentMarks, {"id": student.id});
  if (!_.isUndefined(data)) {
    studentsArray.push({id: student.id, name: student.name, marks: data.marks});
  } else {
    studentsArray.push({id: student.id, name: student.name, marks: "null"});
  }
}

Answer 5

Answer №3

Hey there, here is an example of how you can utilize the push method:

$scope.studentDetails.push({'id':'101','name':'one','marks':'78'});
$scope.studentDetails.push({'id':'102','name':'two','marks':'78'});
$scope.studentDetails.push({'id':'103','name':'three','marks':'78'});

If you want to use a loop to append data, you can do it like this:

for(i = 0; i < studentResult.length; i++){
    $scope.studentDetails.push(studentResult[i]);
}

Answer 6

Hey there, here is an example of how you can utilize the push method:

$scope.studentDetails.push({'id':'101','name':'one','marks':'78'});
$scope.studentDetails.push({'id':'102','name':'two','marks':'78'});
$scope.studentDetails.push({'id':'103','name':'three','marks':'78'});

If you want to use a loop to append data, you can do it like this:

for(i = 0; i < studentResult.length; i++){
    $scope.studentDetails.push(studentResult[i]);
}

Answer 7

Answer №4

When utilizing _.zip, the object array merges two arrays into a single array where each array element is also an array.

To create a merged object array with _.zip, you can employ .map and .extend as shown below:

var studentDetails = [{ id: 101, name: 'one' }, { id: 102, name: 'two' }, { id: 103, name: 'three' }];
var studentMarks = [{ id: 101, marks: 78 }, { id: 102, marks: 89 }];

var mergedArray = _.zip(studentDetails, studentMarks); // Each element is also an array like [ [{ id: 101, name: 'one' }, { id: 101, marks: 78 }] ]

var studentDetails = _.map(mergedArray, function (item) { return _.extend(item[0], item[1]); }); // [{ id: 101, marks: 78, name: 'one' }, ..]

Answer 8

When utilizing _.zip, the object array merges two arrays into a single array where each array element is also an array.

To create a merged object array with _.zip, you can employ .map and .extend as shown below:

var studentDetails = [{ id: 101, name: 'one' }, { id: 102, name: 'two' }, { id: 103, name: 'three' }];
var studentMarks = [{ id: 101, marks: 78 }, { id: 102, marks: 89 }];

var mergedArray = _.zip(studentDetails, studentMarks); // Each element is also an array like [ [{ id: 101, name: 'one' }, { id: 101, marks: 78 }] ]

var studentDetails = _.map(mergedArray, function (item) { return _.extend(item[0], item[1]); }); // [{ id: 101, marks: 78, name: 'one' }, ..]

What is the best way to combine two arrays into a single array using AngularJS?

Answer №1

Answer №2

Answer №3

Answer №4

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