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ar2zee/reduceFunction.js

Created May 31, 2017 02:18
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Example of reduce function with array function
Raw
reduceFunction.js
var orders = [
{amount: 250},
{amount: 300},
{amount: 350},
{amount: 400}
];
// var quintyty = orders.reduce (function(sum, order) { /*sum- first arguments our callback, order- iterated item */
// console.log('hello', sum , order);
// return sum + order.amount;
// }, 0); /* 0- it's starting point of our callback;( where we start counting)*/
var quintyty = orders.reduce((sum, order) => sum + order.amount , 0);
console.log(quintyty);
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