Question

How to get the N column from a matrix (2D array) in JavaScript

Answer 1

const arr = [
  [1, 2, 3, 5, 6],
  [4, 5, 6, 5, 6],
  [7, 8, 9, 5, 6]
];

const N = 0
const colN = arr.map(function(value,index) { return value[N]; });

console.log(colN); 

  
    
    
/*
run:

[1, 4, 7]
    
*/

 

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