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JavaScript reference

A handy JavaScript reference written in simple language, with videos and examples.

Constructs and Commands

if statement

else statement

else if statement

switch statement

while statement

for statement

for-of statement

for-in statement

The break Statement

continue statement

function construct

delete operator

in operator

eval function

Array construct

Object construct

Typing

Number function

parseInt function

parseFloat function

String function

Boolean function

typeof operator

isFinite function

isNaN function

Special Values

true value

false value

NaN value

null value

undefined value

Infinity value

Mathematical Methods

Math.random method

Math.round method

Math.ceil method

Math.floor method

toFixed method

toPrecision method

Math.sqrt method

Math.pow method

Math.max method

Math.min method

Math.abs

Rare Methods

Math.sin method

Math.cos method

Math.tan method

Math.asin method

Math.acos method

Math.atan method

Math.exp method

Math.log method

toExponential method

Constants

The Math.PI property

Math.E property

Math.LN2 property

Math.LN10 property

Math.LOG2E property

Math.LOG10E property

Math.SQRT1_2 property

Math.SQRT2 property

Regular Expressions

replace method

match method

matchAll method

exec method

test method

search method

Time

Date object

getFullYear method

getMonth method

getDate method

getHours method

getMinutes method

getSeconds method

getMilliseconds method

getDay method

getTime method

The Date.parse method

setFullYear method

setMonth method

setDate method

setHours method

setMinutes method

setSeconds method

setMilliseconds method

Date.now method

Timers

setInterval function

setTimeout function

clearInterval function

clearTimeout function

Getting Elements

querySelector method

getElementById method

querySelectorAll method

getElementsByTagName method

getElementsByClassName method

closest method

matches method

contains method

Getting Relatives

children property

childNodes property

firstElementChild property

The firstChild property

lastElementChild property

lastChild property

previousElementSibling property

nextElementSibling property

parentElement property

parentNode property

Table Parts

rows property

cells property

tHead property

tFoot property

tBodies property

Creating Elements

createElement method

cloneNode method

createTextNode method

Inserting Elements

prepend method

append method

appendChild method

insertBefore method

insertAdjacentElement method

insertAdjacentHTML method

insertAdjacentText method

Removal

removeChild method

remove method

Text and Tag

textContent property

innerHTML property

outerHTML property

nodeValue property

The data property

tagName property

Attributes

getAttribute method

setAttribute method

removeAttribute method

hasAttribute method

dataset property

CSS Classes

classList property

add method of the classList object

remove method of the classList object

toggle method of the classList object

contains method of the classList object

Working with CSS

cssText property

getComputedStyle function

Dimensions

offsetWidth property

offsetHeight property

clientLeft property

clientTop property

clientWidth property

clientHeight property

Offsets

offsetParent property

offsetTop property

offsetLeft property

getBoundingClientRect method

elemFromPoint method

Events

addEventListener method

removeEventListener method

Event types in JavaScript

Event Object

event.preventDefault method

event.type property

event.target property

event.currentTarget property

event.isTrusted property

event.ctrlKey property

event.altKey property

event.shiftKey property

event.metaKey property

event.clientX property

event.clientY property

event.pageX property

event.pageY property

event.code property

event.key property

Advanced

new Event statement

dispatchEvent method

focus method

blur method

Context

call method

apply method

bind method

this

Objects

Object.keys method

Object.values method

Object.assign method

Dialog Windows

alert function

confirm function

prompt function

Basic

moveTo method

lineTo method

strokeRect method

fillRect method

rect method

arc method

clearRect method

General

beginPath method

closePath method

stroke method

fill method

Settings

lineWidth property

strokeStyle property

fillStyle property

lineCap property

lineJoin property

The miterLimit property

Text Work

fillText method

strokeText method

font property

textAlign property

textBaseline property

direction property

Utility

getContext method