var

let

const

none of the above

document. write()

console.log()

innerHTML

document.getElementById()

Display()

Prompt()

Alert()

Confirm()

jscript.write("Sky is blue")

document.write("Sky is blue")

print("Sky is blue")

jscript.print("Sky is blue")

Volatile variable

Mutable variable

Immutable variable

Dynamic variable

Division by zero

Missing of semicolons

Syntax error

Both A and B

if(a!=null)

if (!a)

if(a!null)

if(a!==null)

var defines a variable while let defines a constant.

There is no such major difference between them

The value of variable declared with let cannot be changed

var define function scoped variable while let define block scoped variable

22

4

2

syntax error

=

==

===

!=

//This is a comment

<!--This is a comment-->

/* This is a comment */

Both A and C

variable carName;

var carName;

vari carName;

dim carName;

document. write()

console.log()

window. alert()

innerHTML

Prints an exception error

Prints an overflow error

Displays “Infinity”

Prints the value as such

=

x

==

*

5myvalue

myvalue5

Myvalue

None of These

<!--This is a comment-->

//This is a comment

'This is a comment

#This is a comment

var defines a variable while let defines a constant.

There is no such major difference between them.

The value of a variable declared with var can be changed while the value of a variable declared with let cannot be changed.

var defined function scoped variable while let define block scoped variable.

keyword

function

Declaration Statement

Data type

Displays a message in an alert box

Prints output to the console

Writes data to a file

Logs an error in the browser console