How to delete an element from a sparse array?

Question

I want to know the right way to delete an element in sparse array but keep the indices of others the same.

I don't want to use splice as it'd change the indexes of values.

Answer 1

You could take the delete operator and remove the item. The place is now sparse.

var array = [, , 1, 2, 3];

console.log(array);

delete array[3];

console.log(array);

array.forEach(v => console.log(v)); // shows two elements

.as-console-wrapper { max-height: 100% !important; top: 0; }