JavaScript reduce() method in 5 minutes! ♻️

// .reduce() = reduce the elements of an array
// to a single value

// ----------- EXAMPLE 1 -----------
const prices = [5, 30, 10, 25, 15, 20];

function sum(accumulator, element){
return accumulator + element;
}

// ----------- EXAMPLE 2 -----------
const scores = [75, 50, 90, 80, 65, 95];

function getMax(accumulator, element){
}

function getMin(accumulator, element){
}

[BroCodez]

// .reduce() = reduce the elements of an array
// to a single value

// EXAMPLE 1
const prices = [5, 30, 10, 25, 15, 20];
const total = prices.reduce(sum);



function sum(accumulator, element){
return accumulator + element;
}

// EXAMPLE 2
const scores = [75, 50, 90, 80, 65, 95];
const maximum = scores.reduce(getMax);
const minimum = scores.reduce(getMin);

console.log(maximum);
console.log(minimum);

function getMax(accumulator, element){
return Math.max(accumulator, element);
}

function getMin(accumulator, element){
return Math.min(accumulator, element);
}

[Praeda]

Dude, thank you SO much, the way you've explained how the three data transformation array methods work, as well as the how the forEach loop works, is incredibly easy to understand. I've finally got my head around how the forEach loop works, and now JS is (ifnally) starting to click with me. Again, thank you, and all the best!!

[Mochinori]

This video is absolutely brilliant and so so clear. I love your videos. Thank you.

[RayhanAsif]

Dude I've learned a lot from your videos !!

[zrotrasukha]

Thank you brother, you helped me a lot, May god bless you !!

[pexhay]

is there any difference between defining the callback that way and using arrow notation inside reduce like prices.reduce((accum, el) =>{...})

[AdamGassouma]

I did this :
let username = ["Mr", "Adam", "Gassouma"];
let full = username.reduce(fullname);
console.log(full);
function fullname(previous, next){
return previous+" " + next;
}

[javohir]

would be a way better if you added a initialValue parameter but thank you though

[devlver]

now i know why your channel name is bro code :)

[allhailalona]

good video, but what about objects? u forgot those.

[cyberblitz]

shame you didn't include the initial value parameter too. Otherwise, very educational.

[constdev_]

//Using Arrow Function:
//Arrow Function is awesome :D

const grades = [70, 65, 75, 89, 94];

const maximum = grades.reduce((previous, next) => Math.min(previous, next));

console.log(maximum);

[ianfrye]

Also all other JavaScript higher order array methods can be created with reduce