Generating a two-dimensional array and setting its values in JavaScript

Question

Generating a two-dimensional array and setting its values in JavaScript

I need assistance with creating and initializing a two-dimensional array in JavaScript within an AngularJS application. My current approach is as follows:

$scope.invalidVote = [];
for (var i = 0; i < $scope.arry1.length; i += 1) {
    $scope.answersCount[i] = $scope.arry1[i].arry2.length;

    for(var j = 0; j < $scope.arry1[i].arry2.length; j += 1) {
        $scope.invalidVote[i][j] = false;
    }
}

However, this implementation is not working as expected. Can someone please guide me on the correct way to achieve this?

javascript arrays angularjs

Answer 1

Answer №1

Here is a suggestion:

$scope.invalidVote = [];
for (var i = 0; i < $scope.arry1.length; i++) {
    $scope.answersCount[i] = $scope.arry1[i].arry2.length;
    $scope.invalidVote[i] = [];

    for(var j = 0; j < $scope.arry1[i].arry2.length; j++) {
        $scope.invalidVote[i][j] = false;
    }
 }

Answer 2

Here is a suggestion:

$scope.invalidVote = [];
for (var i = 0; i < $scope.arry1.length; i++) {
    $scope.answersCount[i] = $scope.arry1[i].arry2.length;
    $scope.invalidVote[i] = [];

    for(var j = 0; j < $scope.arry1[i].arry2.length; j++) {
        $scope.invalidVote[i][j] = false;
    }
 }

Answer 3

Answer №2

Assuming that $scope.arry1[i] is an array filled with other arrays and values, your code should be structured as follows:

$scope.invalidVote = $scope.arry1;
for (var i = 0; i < $scope.arry1.length; i += 1) 
  {
    $scope.answersCount[i] = $scope.arry1[i].length;
    for(var j = 0; j < $scope.arry1[i].length; j += 1)
      {
        $scope.invalidVote[i][j] = false;
      }
  }

By setting '$scope.invalidVote = $scope.arry1;', you are ensuring that "invalidVote" will have the same number of indexes.

Answer 4

Assuming that $scope.arry1[i] is an array filled with other arrays and values, your code should be structured as follows:

$scope.invalidVote = $scope.arry1;
for (var i = 0; i < $scope.arry1.length; i += 1) 
  {
    $scope.answersCount[i] = $scope.arry1[i].length;
    for(var j = 0; j < $scope.arry1[i].length; j += 1)
      {
        $scope.invalidVote[i][j] = false;
      }
  }

By setting '$scope.invalidVote = $scope.arry1;', you are ensuring that "invalidVote" will have the same number of indexes.

Generating a two-dimensional array and setting its values in JavaScript

Answer №1

Answer №2

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