Array functions in ES6

es6-array.js

const $buttons = document.querySelectorAll('button');


// Create array from an array-like object
const buttonLabels = Array.from($buttons, button => button.textContent) // ['text', 'text']


// Find something in an array
const arr = [1, 2, 8]

arr.find(x => x > 5) // 8
arr.findIndex(x => x === 2) // 1


// Fill / replace values in an array
const newArr = arr.fill('text', 0, 1); // ['text', 'text', 8]


// Create an array with some values only added conditionally *can also be used for objects the same way
const something = true;
const arr = [1,2,3,...(something?['something']:[]),4];