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}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);Copyright © 2021 Codeinu
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