How to sum every number in an array of numbers.

Using the ES2015 syntax it can be done as follows: let numbers = [10, 42, 5, 87, 61, 34, 99]; let sum = numbers.reduce((a,b) => a + b); where the reduce signature is Array.prototype.reduce(accumulator, element, callback, startingValue) alternatively a for loop could be used.

MC
Answered by Maciej C. Javascript tutor

1732 Views

See similar Javascript Mentoring tutors

Related Javascript Mentoring answers

All answers ▸

What is the difference between global and local variables?


How do you create objects in javascript?


How would you change the background colour of a div with the id "colourme" to purple?


What does the document.onload() function do and why is it useful?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences