Angular Sum Array Of Objects Property Code Example

Example 1: javascript sum array of objects

arr = [{x:1}, {x:3}]  arr.reduce((accumulator, current) => accumulator + current.x, 0);

Example 2: javascript sum of number in object array

run.addEventListener("click", function () {     let sum = people.reduce(function (a, b) { // function(previousValue, currentValue)       return {         age: a.age + b.age, //select age in object array       };     });     console.log(sum); //output sum of ages   });