Skip to content

DEV Community

# of ways to loop Array in JavaScipt

Akash P on March 30, 2020

Hello, World! Here is a challenge, tell me the no of ways in which we can loop over the given arrays below? //Array one let letters = ['j','a',...

Read full post

Adam Crockett 🌀 • Mar 30 '20 • Edited

Alright let's give this a shot.

Recursion
.forEach
.map
.every
.some
.flat
... You get the point, mostly all of the array methods loop under the hood
For loop (of)
For loop number or length based
(cheating here) labeled for loop
while loop
do while
setInterval
generator
itterator
pass to Wasm
aws lambda posted
manually typing array[n]
deprecated! For each in

Any more for anymore anyone?

Akash P • Mar 31 '20

.filter

Adam Crockett 🌀 • Mar 31 '20

"You get the point, mostly all of the array methods loop under the hood"

That covers filter and find

Akash P • Apr 4 '20

One of the resourse I found in #devcommunity by @florinpop17
dev.to/florinpop17/24-javascript-a...

Adam Crockett 🌀 • Apr 4 '20 • Edited

Unfortunately this sort of artical goes out of date quite quickly. Missing Array.prototype.flatMap()

Always best to Google.

Akash P • Apr 4 '20

Fact (PERIOD).