JavaScript Variables

is
let
const

var- is an old version after ES6
please repost...
can be reassigned...

var a = 5; e'lon qilish
a = 6; qayta qiymat tayinlash mumkin
var a = 7; qayta e'lon qilish mumkin

let- cannot be reposted...
can be reassigned...

let a = 5; e'lon qilish
a = 6; qayta qiymat tayinlash mumkin
let a = 7; qayta e'lon qilish mumkin emas

const- used for immutable data
cannot be republished...
cannot be reassigned...

const a = 5; e'lon qilish
a = 6; qayta qiymat tayinlash mumkin emas
const a = 7; qayta e'lon qilish mumkin emas

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