JavaScript Problem: Remove Every nth Element from an Array

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A question on the YouTube channel recently prompted this tutorial on this JavaScript problem. We are going to look at how we can remove every second or third item from an array.

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Tutorials referred to in this video:

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Such a great tutorial. So very helpful, thank you! I'm in the habit of watching and then practicing, and I added this method of comparison to view the two arrays in a table;

const compare_array = [my_array, my_filtered_array];
output.table(compare_array)

karlstenator

I've been watching your videos recently and your explanations are great. Thanks so much!

QkiJose

best yt channel for js... pure core things. Thank you for all videos man!

kojisnjak

great tutorial!

how about the reverse, adding items every nth element?

alexanderr

(idx + 1) not needed. idx % 3 !== 2 should work as well when we want to remove every third element. Or idx % 4 !== 3 - when every fourth.

trusabaka

nums = nums.filter(item => item) has a TREMENDOUS problem that nobody spotted. What if item = 0? You conveniently did not include 0 in the nums array. :)

trusabaka

Why you are not posting videos nowadays ? So disappointed Steven 😔

arunkaiser

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