How to generate flexible arrays using an established array?

Question

How to generate flexible arrays using an established array?

Currently, I am working on creating a new array from an existing one. The structure of my current array is outlined below. How can I ensure that adding a new object results in a new array starting from that point?

myArray: [{
          animal: 'cat',
          food: 'cupcake'
        },
        {
          animal: 'dog',
          food: 'pizza'
        },
        {
          animal: 'lion',
          food: 'apple'
        },
        {
          animal: 'elephant',
          food: 'spinach'
        },
      ]

If I were to add a new Object like

{ animal: 'rhino', food: 'banana'}

, the result would be a new Array structured as:

newArray: [
     { animal: 'rhino', food: 'banana' }
    ]

Adding a new object to the original array should reflect in the new Array as well. I hope this explanation suffices.

javascript arrays

Answer 1

Answer №1

Utilize the spread syntax to easily generate new arrays that do not reference existing ones.

const myArray = [1, 2, 3] //initial array
const myArray2 = [...myArray] //using spread operator to create independent array
myArray2.push(4)
console.log(myArray) // [1, 2, 3]
console.log(myArray2) // [1, 2, 3, 4]

Answer 2

Utilize the spread syntax to easily generate new arrays that do not reference existing ones.

const myArray = [1, 2, 3] //initial array
const myArray2 = [...myArray] //using spread operator to create independent array
myArray2.push(4)
console.log(myArray) // [1, 2, 3]
console.log(myArray2) // [1, 2, 3, 4]

How to generate flexible arrays using an established array?

Answer №1

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