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why do we use let in nodejs

Magnificent Moose answered on July 27, 2023 Popularity 3/10 Helpfulness 1/10

answer why do we use let in nodejs

why do we use let in nodejs

Comment

Variables declared by var keyword are scoped to the immediate function body 
(hence the function scope) while let variables are scoped to the immediate 
enclosing block denoted by { } (hence the block scope).
// Example
function run() {
  var foo = "Foo";
  let bar = "Bar";

  console.log(foo, bar); // Foo Bar

  {
    var moo = "Mooo"
    let baz = "Bazz";
    console.log(moo, baz); // Mooo Bazz
  }

  console.log(moo); // Mooo
  console.log(baz); // ReferenceError
}

Popularity 3/10 Helpfulness 1/10 Language javascript

Source: stackoverflow.com

Tags: javascript let

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