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 -
5
6
What will happen when the following code is executed?
const 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<anonymous>: 1: 1
What will happen when the following code is executed?
const x = 5;
function a() {
x = 6;
return x;
}
console.log(x);
console.log(a());
//The Output will be -
Uncaught SyntaxError: Identifier 'x' has already been declared
at<anonymous>: 1: 1
What will happen when the following code is executed?
const x = 5;
function a() {
const x = 6;
return x;
}
console.log(x);
console.log(a());
//The Output will be -
Uncaught SyntaxError: Identifier 'x' has already been declared
at<anonymous>: 1: 1
What will happen when the following code is executed?
const x = 5;
function a() {
var x = 6;
return x;
}
console.log(x);
console.log(a());
//The Output will be -
Uncaught SyntaxError: Identifier 'x' has already been declared
at<anonymous>: 1: 1
What will happen when the following code is executed?
var x = 5;
function a() {
const 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() {
var x = 6;
return x;
}
console.log(x);
console.log(a());
//The Output will be -
Uncaught SyntaxError: Identifier 'x' has already been declared
at<anonymous>: 1: 1
What will happen when the following code is executed?
var x = 5;
function a() {
var x = 6;
return x;
}
x;
a();
//The Output will be -
6
What will happen when the following code is executed?
var x = 5;
function a() {
var x = 6;
return x;
}
x = a();
//The Output will be -
6
What will happen when the following code is executed?
var x = 5;
function a() {s
var x = 6;
return x;
}
x
//The Output will be -
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() {
var x = 6;
}
console.log(x);
console.log(a());
//The Output will be -
5
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
For more questions, https://www.code-sample.com/2015/04/javascript-interview-questions-answers.html
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Anil Singh is an author, tech blogger, and software programmer. Book writing, tech blogging is something do extra and Anil love doing it. For more detail, kindly refer to this link..
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