javascript sum array of objects
arr = [{x:1}, {x:3}]
arr.reduce((accumulator, current) => accumulator + current.x, 0);javascript sum array of objects
arr = [{x:1}, {x:3}]
arr.reduce((accumulator, current) => accumulator + current.x, 0);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
});javascript object array sum of values in object
const fruitTally = fruit.reduce((currentTally, currentFruit) => {
currentTally[currentFruit] = (currentTally[currentFruit] || 0) + 1
return currentTally
} , {})
// returns {"apple":3,"banana":3,"cherry":2,"mango":2,"apricot":1,"guava":2}Copyright © 2021 Codeinu
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