[Exact]Difference between Javascript variables!?

Question

I'd know javascript,(var , let , const)But these types of variables keep me a bit confused...so I want to that what is the difference between each other and in which purpose they are used,and is their any (important) thing that I don't know about these ?

Answer 1

Here read this
"Var, Let, and Const – What's the Difference?" https://www.freecodecamp.org/news/var-let-and-const-whats-the-difference/
I hope you find your answer .If not ignore it.Thanks😁🤗

Answer 2

Dark Stream[📝📚📝😇] Welcome 🤗

Answer 3

VAR
+ are the oldest way to declare variable.
+ are hoisted
+ are function scoped
+ without declaring a variable, you'll get it as a global var, if not using "strict mode" (else you raise an error)

LET, CONST
+ are newest way to declare variable
+ are not hoisted
+ are block scoped
+ LET is quite equivalent to VAR, CONST can only be assigned once (constant mean that they never change)

HOISTED:
mean that even if declaration occurs later in code, you could use variable... if not (let, const), you get an error if variable was not declared before...

Answer 4

Thank you, I just Found the perfect simple answer

Answer 5

Exampel code :

1. "var"
|
V
var first_code = 1
var second_code = 2
alert(first_code + second_code)

2. "let"
|
V
for(let i = 0;i < 6;i++){
return i
}

3. "const"
|
V
const first_code = 1
/* can be "first_code = 1" */
alert(first_code)

Answer 6

Dark Stream[📝📚📝😇]

https://www.sololearn.com/post/823968/?ref=app

Answer 7

Thank you too

Answer 8

Ok thank you 😇

Answer 9

Your welcome...