Question

How to resize an array in JavaScript

Answer 1

function resizeArray(arr, newSize, defaultValue) {
    return [ ...arr, ...Array(Math.max(newSize - arr.length, 0)).fill(defaultValue)];
}

let arr = [1, 2, 3, 4, 5, 6, 7];

console.log(arr); 

arr = resizeArray(arr, 10, 0)

console.log(arr); 



/*
run:

[
  1, 2, 3, 4,
  5, 6, 7
]
[
  1, 2, 3, 4, 5,
  6, 7, 0, 0, 0
]

*/

 

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