slice.js

/****************************************************************
 *
 * 🍰🍰🍰 Array slice 🍰🍰🍰
 *
 ****************************************************************/

const animals = ['🐶', '🐱', '🐭', '🐻', '🦁'];

// Remove first element
console.log(animals.slice(1)); 

// Remove last element
console.log(animals.slice(0, -1)); 

// Shallow clone
console.log(animals.slice()); 

// Get the three first elements
console.log(animals.slice(0, 3));

// Get the three last elements
console.log(animals.slice(-3)); 

// And the final trick: delete element at given index

function deleteAtIndex(array, index) {
  return [...array.slice(0,index), ...array.slice(index+1)];
}
console.log(deleteAtIndex(animals, 2));