javascript sum array values by key
var array = [
{name: "Peter", age: 43},
{name: "John", age: 32},
{name: "Jake", age: 21}
];
array.reduce(function(sum, current) {
return sum + current.age;
}, 0); // 43 + 32 + 21 = 96javascript sum array values by key
var array = [
{name: "Peter", age: 43},
{name: "John", age: 32},
{name: "Jake", age: 21}
];
array.reduce(function(sum, current) {
return sum + current.age;
}, 0); // 43 + 32 + 21 = 96javascript sum array of objects by key
arr.reduce((total, obj) => obj.credit + total,0)
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