Determining the size of each element in an array using Angular

Question

Determining the size of each element in an array using Angular

Can someone help me figure out how to count the number of times "Jack" appears as the winner in my array? I need to return this count.


function myCtrl($scope) {
    $scope.data = [{
        game: 1,
        dnscore: 10,
        bwscore: 9,
        winner: "Jack"
    }, {
        game: 2,
        dnscore: 9,
        bwscore: 10,
        winner: "Jill"
     }, {
         game: 3,
         dnscore: 9,
         bwscore: 10,
         winner: "Jill"
     }, {
         game: 4,
         dnscore: 6,
         bwscore: 10,
         winner: "Jill"
     }];
};

Once I have the count, I want to display it using {{jackwins}} in my document. Thank you for any assistance!

arrays angularjs

Answer 1

Answer №1

function countJackWins() {
    var tally = 0;
    for (var index = 0; index < $scope.data.length; index++) {
        if ($scope.data[index].winner === "Jack") {
            tally++;
        }
    }
    return tally;
});

Include this function call in your template:

{{ countJackWins() }}

Answer 2

function countJackWins() {
    var tally = 0;
    for (var index = 0; index < $scope.data.length; index++) {
        if ($scope.data[index].winner === "Jack") {
            tally++;
        }
    }
    return tally;
});

Include this function call in your template:

{{ countJackWins() }}

Answer 3

Answer №2

One approach you can take is:

Update your data array using the add function:

function myCtrl($scope) {
    $scope.data = [];
    $scope.add = function(dt){
        data.push(dt);
        if(dt.winner == "Jack")
            $scope.jackwins++;
    }
    $scope.jackwins = 0;
};

UPDATE: Alternatively, you can achieve this through a separate function for more flexibility

function myCtrl($scope) {
    $scope.data = [
        {winner:"Jack", ...},
        {winner:"Jimm", ...}
    ];
    $scope.getWinsCount = function(name){
        var c = 0;
        for(var i=0;i<$scope.data.length;i++){
            if(name==$scope.data[i].winner)
                c++;
        }
        return c;
    };
};

In your HTML, you can call it like this:

<div>{{getWinsCount('Jack')}}</div>

Answer 4

One approach you can take is:

Update your data array using the add function:

function myCtrl($scope) {
    $scope.data = [];
    $scope.add = function(dt){
        data.push(dt);
        if(dt.winner == "Jack")
            $scope.jackwins++;
    }
    $scope.jackwins = 0;
};

UPDATE: Alternatively, you can achieve this through a separate function for more flexibility

function myCtrl($scope) {
    $scope.data = [
        {winner:"Jack", ...},
        {winner:"Jimm", ...}
    ];
    $scope.getWinsCount = function(name){
        var c = 0;
        for(var i=0;i<$scope.data.length;i++){
            if(name==$scope.data[i].winner)
                c++;
        }
        return c;
    };
};

In your HTML, you can call it like this:

<div>{{getWinsCount('Jack')}}</div>

Answer 5

Answer №3

If you need to sort information in Angular, simply utilize the filter function on an array to properly organize your data.

Here is a straightforward example:

$scope.filteredData = $filter("filter")($scope.data , {"winner": "Jill"});
{{$scope.filteredData.length}}

Answer 6

If you need to sort information in Angular, simply utilize the filter function on an array to properly organize your data.

Here is a straightforward example:

$scope.filteredData = $filter("filter")($scope.data , {"winner": "Jill"});
{{$scope.filteredData.length}}

Determining the size of each element in an array using Angular

Answer №1

Answer №2

Answer №3

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