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use of a let/const variable outside function

Eager Eel answered on January 27, 2022 Popularity 9/10 Helpfulness 2/10

answer use of a let/const variable outside function

use of a let/const variable outside function

Comment

function a () {
    let ar = 1
}

console.log(ar);

//console: TypeError: ar is not defined

/*
let and const are local variables, that means, if declared on function, then you will
not be able to use the variable, you must use it inside the function or declare
the variable in the file and not a local function
*/

function a () {
    let ar = 1
    
    console.log(ar);
}

const ar = 1
console.log(ar);

//console: 1 1

Popularity 9/10 Helpfulness 2/10 Language javascript

Source: Grepper

Tags: defined function javascript let local-variables variables

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Contributed on Jan 27 2022

Eager Eel

0 Answers Avg Quality 2/10

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use of a let/const variable outside function

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