forming an object with reduce code example

Example 1: reduce method in javascript array of bjects

var arr = [{x:1}, {x:2}, {x:4}];
arr.reduce(function (acc, obj) { return acc + obj.x; }, 0); // 7
console.log(arr);

Example 2: forming an object with reduce

const FRUITS = ["banana", "apple", "orange", "banana", "orange",
"apple", "apple", "orange", "orange", "banana", "orange", "banana"];

const total = FRUITS.reduce((map, fruit) => ({
  ...map,
  [fruit]: (map[fruit] || 0) + 1,
}), {});
console.log(total); // { banana: 4, apple: 3, orange: 5}

Example 3: object.entries reduce

.as-console-wrapper {  max-height: 100% !important;  top: 0;}