# Array Methods Explained As Emojis
## 1. `Array.push()`
Adds one or more elements to the end of an array. Or grows a farm.
```
let livestock = ["🐷", "🐮", "🐔"];livestock.push("🐴", "🐮");// console.log(livestock);// ["🐷", "🐮", "🐔", "🐴", "🐮"]
```
\_Documentation on \_[*MDN*](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/push)
## 2. `Array.from()`
Creates a new array from an array-like or iterable object. Or separates some wild animals.
```
const wild = "🐻🐯🦁";const tamed = Array.from(wild);// console.log(tamed);// ["🐻", "🐯", "🦁"]
```
\_Documentation on \_[*MDN*](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/from)
## 3. `Array.concat()`
Merges two or more arrays into a single new one. Or brings different worlds together.
```
const dogs = ["🐶", "🐶"];const cats = ["🐱", "🐱", "🐱"];const pets = dogs.concat(cats);// console.log(pets);// ["🐶", "🐶", "🐱", "🐱", "🐱"]
```
\_Documentation on \_[*MDN*](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/concat)
## 4. `Array.every()`
Checks if all elements of an array pass the test. Or detects intruders.
```
const visitors = ["🧑", "👽", "🧑", "🧑", "🤖"];const isHuman = e => e === "🧑";const onlyHumans = visitors.every(isHuman);// console.log(onlyHumans);// false
```
\_Documentation on \_[*MDN*](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/every)
## 5. `Array.fill()`
Replaces the elements of an array from start to end index with a given value. Or grows some trees.
```
let seeds = ["🌱", "🌱", "🌱", "🌱", "🌱"];seeds.fill("🌳", 1, 4);// console.log(seeds);// ["🌱", "🌳", "🌳", "🌳", "🌱"]
```
\_Documentation on \_[*MDN*](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/fill)
## 6. `Array.filter()`
Creates a new array containing all elements passing the test. Or predicts your relationship status.
```
const guests = ["👩👨", "👩👩", "👨", "👩", "👨👨"];const singles = guests.filter(g => g.length/2 === 1); // *// console.log(singles);// ["👨", "👩"]
```
*\* You might wonder, why the string length is divided by two here. The reason is that emojis actually are represented by a pair of code points, also known as a surrogate pair.*\
\&#xNAN;*Try `"👩".length` in your console and see for yourself. More information in* [*this article*](https://thekevinscott.com/emojis-in-javascript/)*.*
\_Documentation on \_[*MDN*](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/filter)
## 7. `Array.flat()`
Creates a new array containing all elements from all sub-arrays up to a given depth. Or cracks any safe.
```
const savings = ["💵", ["💵", "💵"], ["💵", "💵"], [[["💰"]]]];const loot = savings.flat(3)// console.log(loot);// ["💵", "💵", "💵", "💵", "💵", "💰"];
```
\_Documentation on \_[*MDN*](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/flat)
## 8. `Array.includes()`
Checks if an array contains a specific element. Or finds the secret sweet tooth.
```
const food = ["🥦", "🥬", "🍅", "🥒", "🍩", "🥕"];const caught = food.includes("🍩");// console.log(caught);// true
```
\_Documentation on \_[*MDN*](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/includes)
## 9. `Array.join()`
Concatenates all array elements to one single string, using an optional separator. Or builds local area networks.
```
const devices = ["💻", "🖥️", "🖥️", "💻", "🖨️"];const network = devices.join("〰️");// console.log(network);// "💻〰️🖥️〰️🖥️〰️💻〰️🖨️"
```
\_Documentation on \_[*MDN*](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/join)
## 10. `Array.map()`
Calls a function on each array element and returns the result as new array. Or feeds all hungry monkeys.
```
const hungryMonkeys = ["🐒", "🦍", "🦧"];const feededMonkeys = hungryMonkeys.map(m => m + "🍌");// console.log(feededMonkeys);// ["🐒🍌", "🦍🍌", "🦧🍌"]
```
\_Documentation on \_[*MDN*](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/map)
## 11. `Array.reverse()`
Reverses the order of elements in an array. Or decides the outcome of a race.
```
let rabbitWins = ["🐇", "🦔"];const hedgehogWins = rabbitWins.reverse();// console.log(hedgehogWins);// ["🦔", "🐇"]
```
*Note that this method is destructive, it modifies the original array. So after line 2 of this example `rabbitWins` and `hedgehogWins` both have the value* `["🦔", "🐇"]`
\_Documentation on \_[*MDN*](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/reverse)
## 12. `Array.slice()`
Creates a new array from copying a portion of an array defined by start and end index. Or cheats in an exam.
```
const solutionsOfClassmates = ["📃", "📑", "📄", "📝"];const myOwnSolutionReally = solutionsOfClassmates.slice(2, 3);// console.log(myOwnSolutionReally);// ["📄"]
```
\_Documentation on \_[*MDN*](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/slice)
## 13. `Array.some()`
Tests if at least one element of an array passes the test. Or finds if some participants of your meeting forgot to mute their mic.
```
const participants = ["🔇", "🔇", "🔊", "🔇", "🔊"];const isLoud = p => p === "🔊";const troubles = participants.some(isLoud);// console.log(troubles);// true
```
\_Documentation on \_[*MDN*](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/some)
## 14. `Array.sort()`
Sorts all elements of an array. Or organizes your bookshelf again.
```
let books = ["📕", "📗", "📕", "📒", "📗", "📒"];books.sort();// console.log(books);// ["📒", "📒", "📕", "📕", "📗", "📗"]
```
\_Documentation on \_[*MDN*](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/sort)
## 15. `Array.splice()`
Removes, replaces or adds elements to an array. Or changes the weather.
```
let weather = ["☁️", "🌧️", "☁️"];weather.splice(1, 2, "☀️");// console.log(weather);// ["☁️", "☀️"]
```
\_Documentation on \_[*MDN*](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/splice)
## 16. `Array.unshift()`
Adds one or more elements to the beginning of an array. Or couples a loco.
```
let train = ["🚃", "🚃", "🚃", "🚃"];train.unshift("🚂");// console.log(train);// ["🚂", "🚃", "🚃", "🚃", "🚃"]
```
\_Documentation on \_[*MDN*](https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Array/unshift)
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