There are some handy ways to summarize in angled , example :
1): Calculating within ng-repeat
var app = angular.module('app', []);
app.controller('ctrl', function($scope){
$scope.despesas = [
{'nome': '1', valor:100},
{'nome': '2', valor:20},
{'nome': '3', valor:40},
];
$scope.remove = function(){
};
$scope.total = 0;
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script><divng-app="app" ng-controller="ctrl">
<table class="table table-hover">
<th>DESCRIÇÃO</th>
<th>VALOR</th>
<th class="text-center">Ação</th>
<tr ng-repeat="despesa in despesas">
<td>
<a ng-href="#/despesa/{{despesa._id}}">{{despesa.nome}}</a>
</td>
<td>R${{despesa.valor}}</td>
<td class="text-center" ng-init="$parent.total = $parent.total + despesa.valor">
<button ng-click="remove(despesa)" class="btn btn-warning">
Remover
</button>
</td>
</tr>
Total: {{total}}
</table>
</div>
Note: If you have any filter would not be the most recommendable, if the rule is the general sum, because the sum will also apply the filter.
2) Calculating with function :
var app = angular.module('app', []);
app.controller('ctrl', function($scope){
$scope.despesas = [
{'nome': '1', valor:100},
{'nome': '2', valor:20},
{'nome': '3', valor:40},
];
$scope.remove = function(){
};
$scope.getTotal = function()
{
var s = 0;
for(i = 0; i < $scope.despesas.length; i++)
{
s = s + $scope.despesas[i].valor;
}
return s;
}
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script><divng-app="app" ng-controller="ctrl">
<table class="table table-hover">
<th>DESCRIÇÃO</th>
<th>VALOR</th>
<th class="text-center">Ação</th>
<tr ng-repeat="despesa in despesas">
<td>
<a ng-href="#/despesa/{{despesa._id}}">{{despesa.nome}}</a>
</td>
<td>R${{despesa.valor}}</td>
<td class="text-center" ng-init="$parent.total = $parent.total + despesa.valor">
<button ng-click="remove(despesa)" class="btn btn-warning">
Remover
</button>
</td>
</tr>
Total: {{getTotal()}}
</table>
</div>
One of two ways may fit your question, but I believe the second is the best, perhaps, by summarizing the items contained in this array , but it's nice to have several possible ways to solve a problem and how best to fit in with your business rule.
