Java Script Online Test

parseInt ()

Number()

parseFloat()

valueOf()

Display()

Prompt()

Alert()

Confirm()

5myvalue

myvalue5

Myvalue

None of These

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

document. write()

console.log()

innerHTML

document.getElementById()

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

var defines a variable while let defines a constant

var declare function scoped variable while let declare block scoped variable

All of the options

Boolean

String

Number

Function

0

3

error

5

5

10

55

error

var

let

const

none of the above

2value

first-name

var

_totalAmount

variable carName;

var carName;

vari carName;

dim carName;

//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

var

let

static

public

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.

Displays a message in an alert box

Prints output to the console

Writes data to a file

Logs an error in the browser console

53

8

2

Error

Volatile variable

Mutable variable

Immutable variable

Dynamic variable

Null type

Undefined type

Number type

All of the mentioned

<!--This is a comment-->

//This is a comment

'This is a comment

#This is a comment

Long

Text

Integer

Number

keyword

function

Declaration Statement

Data type

integers

double precision floating point

double

floating point

document. write()

console.log()

window. alert()

innerHTML

jscript.write("Sky is blue")

document.write("Sky is blue")

print("Sky is blue")

jscript.print("Sky is blue")