Can any one tell what's the use of { and } in js.

Answer 1

{ } represent body for any statement or expression.
for any given statement or expression all the codes inside { } brackets will be executed once or multiple time.

you can check this function statement...

function add() {
return 1 + 1;
}

now when you invoke/run/execute the function add(), code inside function body starting from { to } will be executed.

for simplicity you can think {} as a wrapper or a container of some codes

Answer 2

example:
if(x> 1){
//some code
}

this is scope, defining what code segments belongs to the if condition.It defines what are Global variables and local... variables

for more info:
https://www.w3schools.com/js/js_scope.asp

Answer 3

to contain some code

Answer 4

They are used in loops, so the code between the { } is done if the statement is true.

Answer 5

Question is not clear. It's​ better if u can provide example.
It can be an Object, Scope (code block) and etc..

Answer 6

thnx....i got it now.