How to Get the Average from a JavaScript Array with Functional Programming

[Ransonikuo]

Thank you, I was having trouble understanding the reduce function. Understand it more clearly now.

[MaylynnNg]

This was soo helpful! Thank you!
I also love the tip to just pseudocode what you want to do!

[jayenglishgroup]

Great video! Sorry to ask, but what extension are you using that gives you the results on code?

[samerlagha]

Thanks very much for that lesson, i have a question how i can get the average for that exampel : Given an array of countries with their population.
Calculate average population of the countries.

[saitejagatadi]

const arrAvg = arr => arr.reduce((a, b) => a + b) / arr.length
document.write(arrAvg([20, 30, 40]))

[myriamhelaoui]

Hello, thank you so much for this video. I tried it but I don't have the result in blue in my last lign. Can you help me please ?
const getAverage = arr => {
// sum the values from the array

const reducer = (total, currentValue) => total + currentValue
const sum = arr.reduce(reducer);
// get the length of the array
// divide the array sum by the length
return sum / arr.length;
}
console.log (getAverage ([1, 2, 3, 4, 5])); //?

[oleksandrtsoi]

I'm begginer, 100% same code wrote, code didn't work. Sadly((