References

Array.at()

Array.concat()

Array.copyWithin()

Object.defineProperties()

Object.defineProperty()

Object.entries()

Object.freeze()

Object.fromEntries()

Object.getOwnPropertyDescriptor()

Object.getOwnPropertyDescriptors()

Object.getOwnPropertyNames()

Object.getOwnPropertySymbols()

Object.getPrototypeOf()

Object.hasOwn()

Object.hasOwnProperty()

Object.is()

Object.isExtensible()

Object.isFrozen()

Object.isPrototypeOf()

Object.isSealed()

Object.keys()

Object.preventExtensions()

Object.seal()

Object.setPrototypeOf()

Object.toLocaleString()

String.fromCodePoint()

String.includes()

String.indexOf()

String.lastIndexOf()

String.localeCompare()

String.toLocaleLowerCase()

String.toLocaleUpperCase()

Array.filter()

Leírás

A filter függvény az egy több elemeinek megszűrésére való.

Szintaxis

filter(callbackFn)
filter(callbackFn, thisArg)

Példa

const words = ['spray', 'limit', 'elite', 'exuberant', 'destruction', 'present']
 
const result = words.filter((word) => word.length > 6)
 
console.log(result)
// Expected output: Array ["exuberant", "destruction", "present"]

in this article

Leírás
Szintaxis
Példa