How to slice a two dimensional array?

Question

I have an array say

arr1 = [[1,2,3,4],[5,6,7,8],[9,10,11,12]]

I want to slice it and pick 2nd and 3rd column.

I have tried using slice but it did not work.

var result = arr1.slice(1,3);

but I dont get the desired output which should be

[[2,3],[6,7],[10,11]]

Is it because I am using Google spreadsheet to collect data?

I am extremely sorry I meant column – Mask Oct 14 '20 at 17:03 — Mask, Oct 14 '20 at 17:03

score 4 · Accepted Answer · answered Oct 14 '20 at 17:04

You need to map the sliced arrays.

const
    array = [[1, 2, 3, 4], [5, 6, 7, 8], [9, 10, 11, 12]],
    customSlice = array => array.slice(1, 3),
    result = array.map(customSlice);
    
console.log(result);

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How to slice a two dimensional array?

1 Answers1