Array

• "=>" update the array
• "=" return a value

Properties

length

[🍐, 🍏, 🍓, 🍌, 🍇].length = 5

Methods

from

Array.from('🍐🍏🍓🍌🍇') = [🍐, 🍏, 🍓, 🍌, 🍇]

isArray

Array.isArray([🍐, 🍏, 🍓, 🍌, 🍇]) = ✔

of

Array.of(🍐, 🍏, 🍓, 🍌, 🍇) = [🍐, 🍏, 🍓, 🍌, 🍇]

concat

[🐮, 🐷].concat([🍓, 🍏, 🍌]) = [🐮, 🐷, 🍓, 🍏, 🍌]

copyWithin

[🍐, 🍏, 🍓, 🍌, 🍇].copyWithin(2) = [🍐, 🍏, 🍐, 🍏, 🍓]
[🍐, 🍏, 🍓, 🍌, 🍇].copyWithin(1, 3) = [🍌, 🍓, 🍌, 🍇, 🍇]
[🍐, 🍏, 🍓, 🍌, 🍇].copyWithin(0, 3, 4) = [🍌, 🍏, 🍓, 🍌, 🍇]

every

[🍌, 🍌, 🍌, 🍌, 🍌].every(vegetable => 🍌) = ✔
[🥔, 🥕, 🍓, 🍏, 🍌].every(vegetable => 🍌) = ✘

fill

[🥔, 🥕, 🍐, 🍏, 🍓].fill(🍌, 2, 4) => [🥔, 🥕, 🍌, 🍌, 🍓]
[🥔, 🥕, 🍐, 🍏, 🍓].fill(🍌, 1) => [🥔, 🍌, 🍌, 🍌, 🍌]
[🥔, 🥕, 🍐, 🍏, 🍓].fill(🍌) => [🍌, 🍌, 🍌, 🍌, 🍌]

filter

[🍕, 🍝, 🌭, 🍔, 🍟].filter(ingredient => 🇮🇹) = [🍕, 🍝]
[🍕, 🍝, 🌭, 🍔, 🍟].filter(ingredient => FR) = []

find

[🥒, 🥔, 🥕, 🍓, 🍏].find(vegetable => fruit) = 🍓
[🥒, 🥔, 🥕, 🍓, 🍏].find(vegetable => cloth) = undefined

findIndex

[🥒, 🥔, 🥕, 🍓, 🍏].findIndex(vegetable => 🍓) = 3
[🥒, 🥔, 🥕, 🍓, 🍏].findIndex(vegetable => cloth) = -1

flat

[🍕, 🍝, [🥒, 🥔]].flat() = [🍕, 🍝, 🥒, 🥔]
[🍕, 🍝, [🥒, 🥔, [🐱, 🐶]]].flat(2) = [🍕, 🍝, 🥒, 🥔, 🐱, 🐶]

flatMap

forEach

[🎂].forEach(🍰 => console.log(🍰))

includes

[🐱, 🐶, 🦇, 🐷, 🐮].includes(🐷) = ✔
[🐱, 🐶, 🦇, 🐷, 🐮].includes(🐔) = ✘

indexOf

[🐜, 🐪, 🦇, 🦆, 🦇].indexOf(🦇) = 2
[🐜, 🐪, 🦇, 🦆, 🦇].indexOf(🦇, 2) = 4
[🐜, 🐪, 🦇, 🦆, 🦇].indexOf(🐔) = -1

join

[🌬, 🔥, 🌧].join() = '🌬,🔥,🌧'
[🌬, 🔥, 🌧].join(🐔) = '🌬🐔🔥🐔🌧'

lastIndexOf

[🐜, 🐪, 🦇, 🦆, 🦇].lastIndexOf(🦇) = 4
[🐜, 🐪, 🦇, 🦆, 🦇].lastIndexOf(🐪) = 1
[🐜, 🐪, 🦇, 🦆, 🦇].lastIndexOf(🐔) = -1
[🐜, 🐪, 🦇, 🦆, 🦇].lastIndexOf(🦇, 3) = 4

map

[🌽, 🐷, 🐔, 🦐, 🌾].map(sourceMaterial => 🍳) = [🍿, 🥓, 🍗, 🍤, 🍚]

pop

[🥔, 🥕, 🍐, 🍏, 🍓].pop() = 🍓
[🥔, 🥕, 🍐, 🍏, 🍓].pop() => [🥔, 🥕, 🍐, 🍏]

push

[🐷, 🐐, 🐑].push([🐮, 🐔]) = 5
[🐷, 🐐, 🐑].push([🐮, 🐔]) => [🐷, 🐐, 🐑, 🐮, 🐔]

reduce

[🐮, 🐷].reduce((accumulator, ingredient) => 🔪, initialValue) = 🍖

reduceRight

reverse

[🥔, 🥕, 🍐, 🍏, 🍓].reverse() = [🍓, 🍏, 🍐, 🥕, 🥔]
[🥔, 🥕, 🍐, 🍏, 🍓].reverse() => [🍓, 🍏, 🍐, 🥕, 🥔]

shift

[🐷, 🐐, 🐑, 🐮, 🐔].shift() = 🐷
[🐷, 🐐, 🐑, 🐮, 🐔].shift() => [🐐, 🐑, 🐮, 🐔]
[].shift() => undefined

slice

[🐜, 🦇, 🐪, 🦆, 🐘].slice() = [🐜, 🦇, 🐪, 🦆, 🐘]
[🐜, 🦇, 🐪, 🦆, 🐘].slice(2) = [🐪, 🦆, 🐘]
[🐜, 🦇, 🐪, 🦆, 🐘].slice(0, -2) = [🐜, 🦇, 🐪]
[🐜, 🦇, 🐪, 🦆, 🐘].slice(-2) = [🦆, 🐘]

some

[🥒, 🥔, 🥕, 🍓, 🍏].some(vegetable => fruit) = true
[🥒, 🥔, 🥕, 🍄, 🥗].some(vegetable => fruit) = false

sort

[1, 30, 4, 21].sort() = [1, 21, 30, 4]

splice

[🥒, 🥕, 🍄, 🥗].splice(1, 0, 🥔) => [🥒, 🥔, 🥕, 🍄, 🥗]
[🥒, 🥕, 🍄, 🥗].splice(3, 1, 🥔) => [🥒, 🥕, 🍄, 🥔]

toString

[🥒, 🥔, 🥕, 🍄, 🥗].toString() = '🥒, 🥔, 🥕, 🍄, 🥗'

unshift

[🐷, 🐐, 🐑].unshift(🐮, 🐔) = 5
[🐷, 🐐, 🐑].unshift(🐮, 🐔) => [🐮, 🐔, 🐷, 🐐, 🐑]