JS Data Structures: Arrays, see more at: https://medium.com/p/e1bc57bda950

DATA_STRUCTURES_removingElementsInMiddleOfAnArray.js

const animals = ['elephant', 'monkey', 'snake', 'lion']

const desiredPositionToRemove = 2

for (var index = desiredPositionToRemove; index < animals.length; index++) {
  animals[index] = animals[index + 1]
}

animals.length = animals.length - 1

console.log(animals) // will return [ 'elephant', 'monkey', 'lion' ]