Deleting a column from a multidimensional array in javascript

Question

I have a 2D array:

var array = [[\"a\", \"b\", \"c\"],[\"a\", \"b\", \"c\"],[\"a\", \"b\", \"c\"]]

I want to delete an entire column of thi

Answer 1

Useful code snipped that creates an independent copy of an array

use slice method inside map. Here is an example:

let arrayA = ['a', 'b', 'c', 'd']

let arrayB = arrayA.map((val) => {
      return val.slice()
})

arrayB[2] = 'Z';

console.log('--------- Array A ---------')
console.log(arrayA)

console.log('--------- Array B ---------')
console.log(arrayB)

Note: In Angular 10, I used different methods to get an independent copy of an array but all failed. Here are some of them:

arrayB.push(arrayA) // failed    
arrayB = Object.create(arrayA) // failed    
arrayB = arrayA.splice() // failed

All failed methods were copying references along with data.