All JavaScript Methods — Complete Reference

Browse all 410 JavaScript method reference pages. Each page covers syntax, parameters, return types, code examples, and browser compatibility. Methods are grouped by their parent object — Array, String, Object, Math, Date, Promise, and more.

Array(40)

map()filter()reduce()forEach()find()findIndex()some()every()includes()indexOf()lastIndexOf()flat()flatMap()sort()reverse()splice()slice()concat()join()push()pop()shift()unshift()fill()copyWithin()entries()keys()values()from()isArray()of()at()findLast()findLastIndex()toSorted()toReversed()toSpliced()with()groupBy()reduceRight()

String(31)

charAt()charCodeAt()codePointAt()concat()includes()indexOf()lastIndexOf()match()matchAll()replace()replaceAll()search()slice()split()substring()toLowerCase()toUpperCase()trim()trimStart()trimEnd()padStart()padEnd()repeat()startsWith()endsWith()at()normalize()localeCompare()raw()fromCharCode()fromCodePoint()

Object(20)

keys()values()entries()assign()freeze()isFrozen()seal()isSealed()create()defineProperty()defineProperties()getOwnPropertyDescriptor()getOwnPropertyNames()getOwnPropertySymbols()getPrototypeOf()setPrototypeOf()is()hasOwn()fromEntries()groupBy()

Math(25)

abs()ceil()floor()round()trunc()max()min()pow()sqrt()cbrt()log()log2()log10()random()sign()sin()cos()tan()atan2()PI()E()hypot()clz32()fround()imul()

Date(20)

now()parse()getTime()getFullYear()getMonth()getDate()getDay()getHours()getMinutes()getSeconds()toISOString()toLocaleDateString()toLocaleTimeString()toLocaleString()setFullYear()setMonth()setDate()setHours()toJSON()getTimezoneOffset()

Promise(10)

resolve()reject()all()allSettled()any()race()then()catch()finally()withResolvers()

JSON(4)

parse()stringify()rawJSON()isRawJSON()

Number(10)

parseInt()parseFloat()isNaN()isFinite()isInteger()isSafeInteger()toFixed()toPrecision()toExponential()toString()

RegExp(5)

test()exec()matchAll()toString()source()

Map(6)

set()get()has()delete()clear()forEach()

Set(4)

add()has()delete()clear()

console(10)

log()error()warn()info()debug()table()time()timeEnd()group()groupEnd()

window(17)

setTimeout()setInterval()clearTimeout()clearInterval()fetch()atob()btoa()structuredClone()queueMicrotask()encodeURIComponent()decodeURIComponent()encodeURI()decodeURI()requestAnimationFrame()URL()scrollTo()getComputedStyle()

Document(8)

querySelector()querySelectorAll()getElementById()getElementsByClassName()getElementsByTagName()createElement()createTextNode()createDocumentFragment()

Element(29)

appendChild()append()prepend()remove()removeChild()insertBefore()replaceWith()replaceChild()before()after()cloneNode()setAttribute()getAttribute()removeAttribute()hasAttribute()getBoundingClientRect()scrollIntoView()innerHTML()textContent()outerHTML()insertAdjacentHTML()matches()closest()parentElement()children()firstElementChild()lastElementChild()scrollHeight()getAttributeNames()

DOMTokenList(5)

add()remove()toggle()contains()replace()

HTMLElement(7)

style()offsetWidth()clientHeight()focus()blur()click()dataset()

EventTarget(3)

addEventListener()removeEventListener()dispatchEvent()

Event(15)

preventDefault()stopPropagation()stopImmediatePropagation()defaultPrevented()CustomEvent()Event()KeyboardEvent()MouseEvent()PointerEvent()TouchEvent()FocusEvent()InputEvent()WheelEvent()HashChangeEvent()PopStateEvent()

MutationObserver(1)

MutationObserver()

IntersectionObserver(1)

IntersectionObserver()

ResizeObserver(1)

ResizeObserver()

AbortController(2)

AbortSignal()AbortController()

Request(1)

Request()

Response(10)

Response()json()json()text()blob()arrayBuffer()formData()clone()ok()status()

Headers(9)

Headers()get()set()has()append()delete()entries()keys()values()

FormData(6)

FormData()append()get()getAll()set()delete()

ReadableStream(1)

ReadableStream()

URL(13)

href()origin()pathname()hostname()host()port()protocol()search()hash()searchParams()toString()toJSON()canParse()

URLSearchParams(7)

URLSearchParams()get()set()append()delete()has()getAll()

Storage(10)

setItem()getItem()removeItem()clear()key()length()setItem()getItem()removeItem()clear()

Crypto(2)

randomUUID()getRandomValues()

SubtleCrypto(3)

digest()encrypt()decrypt()

TextEncoder(1)

encode()

TextDecoder(1)

decode()

Performance(3)

now()mark()measure()

History(5)

pushState()replaceState()back()forward()go()

Intl(11)

NumberFormat()DateTimeFormat()RelativeTimeFormat()Collator()PluralRules()ListFormat()Segmenter()DisplayNames()Locale()DurationFormat()supportedValuesOf()

Intl.NumberFormat(4)

format()formatToParts()formatRange()resolvedOptions()

Intl.DateTimeFormat(4)

format()formatToParts()formatRange()resolvedOptions()

Intl.RelativeTimeFormat(1)

format()

Intl.Collator(1)

compare()

Intl.ListFormat(1)

format()

TypedArray(14)

Uint8Array()Int8Array()Uint8ClampedArray()Uint16Array()Int16Array()Uint32Array()Int32Array()Float32Array()Float64Array()BigInt64Array()BigUint64Array()set()subarray()slice()

ArrayBuffer(3)

ArrayBuffer()slice()isView()

DataView(5)

DataView()getInt32()setInt32()getUint32()getFloat64()

WeakRef(2)

WeakRef()deref()

FinalizationRegistry(3)

FinalizationRegistry()register()unregister()

WeakMap(4)

set()get()has()delete()

WeakSet(3)

add()has()delete()

Proxy(2)

Proxy()revocable()

Reflect(6)

get()set()has()ownKeys()defineProperty()deleteProperty()

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About This Reference

This directory covers every JavaScript method available on DuskTools. Each reference page includes full method syntax, parameter descriptions with types, return value documentation, three practical code examples, browser and Node.js compatibility notes, and links to related methods. Use it as your daily JavaScript reference for Array manipulation, String processing, Object utilities, and asynchronous patterns.