Deleting array elements in JavaScript - delete vs splice

Question

What is the difference between using the delete operator on the array element as opposed to using the Array.splice method?

For example:

myArray = [\         


        

Answer 1

delete Vs splice

when you delete an item from an array

var arr = [1,2,3,4]; delete arr[2]; //result [1, 2, 3:, 4]
console.log(arr)

when you splice

var arr = [1,2,3,4]; arr.splice(1,1); //result [1, 3, 4]
console.log(arr);

in case of delete the element is deleted but the index remains empty

while in case of splice element is deleted and the index of rest elements is reduced accordingly