The JavaScript is the most popular scripting languages and it developed by Netscape and used to develop the client-side web applications.
What will happen when the following code is executed?
var x = 5;
console.log(x);
if (true) {
var x = 6;
console.log(x);
}
console.log(x);
//The Output will be -
5
6
6
What will happen when the following code is executed?
var x = 5;
console.log(x);
if (false) {
var x = 6;
console.log(x);
}
console.log(x);
//The Output will be -
5
5
What will happen when the following code is executed?
var x = 5;
function a() {
var x = 6;
return x;
}
console.log(x);
console.log(a());
//The Output will be -
5
6
What will happen when the following code is executed?
var x = 5;
function a() {
x = 6;
return x;
}
console.log(x);
console.log(a());
//The Output will be -
5
6
What will happen when the following code is executed?
var x = 5;
function a() {
let x = 6;
return x;
}
console.log(x);
console.log(a());
//The Output will be -
5
6
What will happen when the following code is executed?
let x = 5;
function a() {
let x = 6;
return x;
}
console.log(x);
console.log(a());
//The Output will be -
Uncaught SyntaxError: Identifier 'x' has already been declared
at: 1: 1
What will happen when the following code is executed?
const x = 5;
function a() {
let x = 6;
return x;
