copy

Copies part of array to another.

array.copy(x, y, [j], [i], [I]);
// x: target array
// y: source array
// j: write index (0)
// i: read start index (0)
// I: read end index (x.length)

const array = require('extra-array');

var a = [1, 2, 3, 4, 5];
var b = [10, 20, 30];
array.copy(a, b);
// [10, 20, 30, 4, 5]

array.copy(a, b, 1);
// [1, 10, 20, 30, 5]

array.copy(a, b, 1, 1);
// [1, 20, 30, 4, 5]

array.copy(a, b, 1, 1, 2);
// [1, 20, 3, 4, 5]

references

• Array.prototype.copyWithin(): MDN web docs