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JavaScript block-scoped Variable9

SAMER SAEID answered on May 21, 2022 Popularity 6/10 Helpfulness 3/10

answer JavaScript block-scoped Variable9

related js make a variable block scoped

JavaScript block-scoped Variable9

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// program showing block-scoped concept
// global variable
let a = 'Hello';

function greet() {

    // local variable
    let b = 'World';

    console.log(a + ' ' + b);

    if (b == 'World') {

        // block-scoped variable
        let c = 'hello';

        console.log(a + ' ' + b + ' ' + c);
    }

    // variable c cannot be accessed here
    console.log(a + ' ' + b + ' ' + c);
}

greet();

Popularity 6/10 Helpfulness 3/10 Language javascript

Source: Grepper

Tags: javascript

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Contributed on May 21 2022

SAMER SAEID

0 Answers Avg Quality 2/10

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js make a variable block scoped

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//The let and const keywords provide block-scoping
//Global scoped
let global = "I'm Global Scoped";

{
  //Block Scoped
  let a = "I'm Block Scoped";
  const b = "I'm Block Scoped";
  //Var is not block scoped(don't use var)
  var c = "I'm not Block Scoped";
}
//Variable a and b cannot be accessed as they are block scoped
console.log(a,b,c, global); //c and global can be accessed.

Popularity 7/10 Helpfulness 1/10 Language javascript

Source: Grepper

Tags: scoped javascript block j

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Contributed on Jul 20 2022

OnTheGoCode

0 Answers Avg Quality 2/10

JavaScript block-scoped Variable9

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js make a variable block scoped

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