Java Script Online Test

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 variable declared with let cannot be changed

var define function scoped variable while let define block scoped variable

Volatile variable

Mutable variable

Immutable variable

Dynamic variable

var

let

const

none of the above

jscript.write("Sky is blue")

document.write("Sky is blue")

print("Sky is blue")

jscript.print("Sky is blue")

5

10

55

error

53

8

2

Error

Division by zero

Missing of semicolons

Syntax error

Both A and B

Display()

Prompt()

Alert()

Confirm()

variable carName;

var carName;

vari carName;

dim carName;

<!--This is a comment-->

//This is a comment

'This is a comment

#This is a comment

0

3

error

5

Displays a message in an alert box

Prints output to the console

Writes data to a file

Logs an error in the browser console

2value

first-name

var

_totalAmount

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

Null type

Undefined type

Number type

All of the mentioned

document. write()

console.log()

innerHTML

document.getElementById()

integers

double precision floating point

double

floating point

5myvalue

myvalue5

Myvalue

None of These

Boolean

String

Number

Function

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.

keyword

function

Declaration Statement

Data type

//This is a comment

<!--This is a comment-->

/* This is a comment */

Both A and C

Long

Text

Integer

Number

parseInt ()

Number()

parseFloat()

valueOf()