Null type

Undefined type

Number type

All of the mentioned

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

variable carName;

var carName;

vari carName;

dim carName;

Volatile variable

Mutable variable

Immutable variable

Dynamic variable

Displays a message in an alert box

Prints output to the console

Writes data to a file

Logs an error in the browser console

Display()

Prompt()

Alert()

Confirm()

var

let

const

none of the above

Long

Text

Integer

Number

5

10

55

error

parseInt ()

Number()

parseFloat()

valueOf()

document. write()

console.log()

innerHTML

document.getElementById()

keyword

function

Declaration Statement

Data type

Boolean

String

Number

Function

integers

double precision floating point

double

floating point

//This is a comment

<!--This is a comment-->

/* This is a comment */

Both A and C

Division by zero

Missing of semicolons

Syntax error

Both A and B

5myvalue

myvalue5

Myvalue

None of These

<!--This is a comment-->

//This is a comment

'This is a comment

#This is a comment

document. write()

console.log()

window. alert()

innerHTML

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.

jscript.write("Sky is blue")

document.write("Sky is blue")

print("Sky is blue")

jscript.print("Sky is blue")