ZXYmXm

script.js

const animalsArray = [
    {
        "name": "Lilou",
        "species": "cat",
        "size": "small",
        "weight": 5
    },
    {
        "name": "Maïna",
        "species": "cat",
        "size": "small",
        "weight": 10
    },
    {
        "name": "Brico",
        "species": "cat",
        "size": "medium",
        "weight": 30
    },
    {
        "name": "Dumbo",
        "species": "elephant",
        "size": "big",
        "weight": 5000
    }
]

const cats = animalsArray
  .filter((animal) => animal.species === "cat")
  .map((animals) => animals.name)

console.log(cats) 

zxymxm.markdown

ZXYmXm

A Pen by Jerome Lachaud on CodePen.

License.