JSFiddle - React, Tailwind, and code Playground
by hfougere
Babel + JSX
let data = [{"firstname": "Lana", "id": "lana-wachowski-laykaq", "lastname": "Wachowski"}, {"firstname": "Lily", "id": "lily-wachowski-emqq67", "lastname": "Wachowski"}];
var newArr =[];
data.forEach(function(element) {
newArr.push(element.id)
});