CODEWITHSUNDEEP
javascriptscope
p3wcy
p3wcy

Reputation: 31

How to access let variable outside a block in javascript?

var x = 10;
{
    let x = 9;
    console.log(x)
}
console.log(x)

This logs 9 and 10

how to get a log as 10 and 10? how to access x declared outside the block?

Upvotes: 1

Views: 6875

Answers (3)

Anonymous Coder
Anonymous Coder

Reputation: 586

you can use 'var' keyword instead of 'let', it can be accessed globally

{
    var x = 10;
    console.log(x)
}
console.log(x)

or in your solution you can also declare let outside the block and reassign it inside the block

 let x = 10;
 {
    x = 9
    console.log(x)
 }
 console.log(x)

Upvotes: 0

mk23
mk23

Reputation: 1403

let has block scope so it is scoped only inside the brackets. You can define it outside or use var instead of let keyword as below:

{
 var x = 10;
 console.log(x)
}
console.log(x)

With let keyword:

let x = 10;
{
 console.log(x)
}
console.log(x)

For detailed explanation about the variable scope refer this

Upvotes: 0

Kamalakannan J
Kamalakannan J

Reputation: 2998

No, You can't access let variables outside the block, if you really want to access, declare it outside, which is common scope.

let x;
{
    x = 9
    console.log(x)
}
x = 10
console.log(x)

Upvotes: 3

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