Array.prototype.splice is really cool. I think it's worth to mention that you actually can do a replace with a third argument:
const arr = [1,2,3,4,5]; arr.splice(1, 1, 0); arr; // [1,0,3,4,5]
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Array.prototype.splice is really cool. I think it's worth to mention that you actually can do a replace with a third argument:
const arr = [1,2,3,4,5];
arr.splice(1, 1, 0);
arr;
// [1,0,3,4,5]