Java Script features

 Data Types:-

String

Number

Bigint

Boolean

Undefined

Null

Symbol

Object

The Object data type can contain:-

object

array

date

Events:-

onchange

onclick

onmouseover

onmouseout

onmousedown

onload

String Methods:-

length

slice()

substring()

substr()

replace()

replaceAll()

toUpperCase()

toLowerCase()

concat()

trim()

trimStart()

trimEnd()

padStart()

padEnd()

charAt()

split()

Dt:16-10-2023:-

Array Method:-

length

toString()

pop()

push()

shift()

unshift()

join()

delete()

concat()

flat()

splice()

slice()

Comparision Operators:-

==

===

?: Ternary

?? Nullish

?. Optional

Loops:-

for

for/in

for/of

while

do/while

Browser Object Model:-

alert()

confirm()

prompt()

open()

setTimeout()