Answers for "reduce syntax javascript"

12

javascript sum of array

const sum = arr => arr.reduce((a, b) => a + b, 0);
Posted by: Guest on July-03-2020
8

javascript sum array values

function getArraySum(a){
    var total=0;
    for(var i in a) { 
        total += a[i];
    }
    return total;
}

var payChecks = [123,155,134, 205, 105]; 
var weeklyPay= getArraySum(payChecks); //sums up to 722
Posted by: Guest on July-31-2019
42

javascript reduce

var array = [36, 25, 6, 15];

array.reduce(function(accumulator, currentValue) {
  return accumulator + currentValue;
}, 0); // 36 + 25 + 6 + 15 = 82
Posted by: Guest on May-21-2020
10

how to use reduce in javascript

const sum = array.reduce((accumulator, element) => {
  return accumulator + element;
}, 0);
// An example that will loop through an array adding
// each element to an accumulator and returning it
// The 0 at the end initializes accumulator to start at 0
// If array is [2, 4, 6], the returned value in sum
// will be 12 (0 + 2 + 4 + 6)

const product = array.reduce((accumulator, element) => {
  return accumulator * element;
}, 1);
// Multiply all elements in array and return the total
// Initialize accumulator to start at 1
// If array is [2, 4, 6], the returned value in product
// will be 48 (1 * 2 * 4 * 6)
Posted by: Guest on January-04-2020
1

js reduce

let newArray = array.reduce( (acc, element, index, originalArray) => {
    // return acc += element
}, initialValue)
Posted by: Guest on May-15-2021
3

syntax of reduce in js

[1,2,3,4,5].reduce((acc, current)=>acc+current, 0)
Posted by: Guest on May-15-2020

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