Better way to sum a property value in an array

Question

I have something like this:

$scope.traveler = [
            {  description: \'Senior\', Amount: 50},
            {  description: \'Senior\', Amount: 50},
             


        

Answer 1

I'm not sure this has been mentioned yet. But there is a lodash function for that. Snippet below where value is your attribute to sum is 'value'.

_.sumBy(objects, 'value');
_.sumBy(objects, function(o) { return o.value; });

Both will work.