JavaScript reduce() method in 5 minutes! ♻️

Рет қаралды 47,690

Күн бұрын

Пікірлер: 47

@BroCodez Жыл бұрын

// .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); console.log(`$${total.toFixed(2)}`); 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); }

@Blitz61wasd Жыл бұрын

Django course please

@Praeda19 10 ай бұрын

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!!

@javohir1704 8 ай бұрын

just restart

@RayhanAsif22 9 ай бұрын

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

@Mochinori99 7 ай бұрын

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

@pokerchannel6991 3 ай бұрын

.I have been trying to do everything with Array.from for example, I use it for summing let sum = 0.0 Array.from ( iter, (element, _) sum += element); see? no reduce. Reason? I don't know how to use reduce, yet. lol

@t.antonyjaneaustus3184 4 ай бұрын

Very good explaination dude..its more help full to me

@piotrmazgaj 5 ай бұрын

This is my seal. I have watched the entire video, understood it, and I can explain it in my own words, thus I have gained knowledge. This is my seal.

@AdamGassouma 7 ай бұрын

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

@zrotrasukha8733 11 ай бұрын

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

@JayFullSnackDev 3 ай бұрын

Thank you for explaining it very well!

@MikeCode-iy9sb 6 ай бұрын

very good explaination. thanksSoMuch~

@devl0ver666 8 ай бұрын

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

@vakyz5333 5 ай бұрын

I rarely comment. You're awesome!

@pexhay4690 Жыл бұрын

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

@ianfrye8988 Жыл бұрын

For the most part no, just depends on if you’re going to reuse that function… when you get into the “this” keyword it does depending on the context

@pexhay4690 Жыл бұрын

@@ianfrye8988 thank you

@pokerchannel6991 3 ай бұрын

I have been trying to do everything with Array.from for example, I use it for summing let sum = 0.0 Array.from ( iter, (element, _) sum += element); see? no reduce. Reason? I don't know how to use reduce, yet. lol

@cyberblitz 9 ай бұрын

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

@xxxharuxiao 5 ай бұрын

oh my god you saved my life thank you!!!!!

@constdev_ 6 ай бұрын

//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);