console
log
var
variable
const
constant
datatype
Number
parselnt
parseFloat
string
boolean
undefined
null
datatypetransform
true
false
toString
typeof
bin
compare
logic
Unicode
if-else
switch-case
while
do-while
break
for
continue
nest
function
function-param
function-return
scope
callback
global
object
property
method
new
for-in
hasOwnProperty
array
length
array-API
pop()
push()
shift()
unshift()
join()
sort()
reverse()
toString
concat(arr1,arr2)
slice(start,end)
splice(start,count,value1,value2...)
String
length
charAt()
split(sep)
slice(start,end)
substr(start,count)
indexOf(value,start)
lastIndexOf(value)
toUpperCase