I was running tests on javascript and I noticed that when I use the delete function at an index of array , array continues with the same size.
Example:
a = [1, 2, 3]
delete a[1]
console.log(a.length); // Imprime 3
Why does this happen?
The delete only arrows the index value passed from the array to undefined .
delete a[1];
console.log(a); //[1,undefined,3]
To remove an index from the array you can use the Array.splice
a.splice(1,1); //vai retornar o indice removido [2]
console.log(a); //[1,3]