DOAP Online Test

<!--This is a comment-->

//This is a comment

'This is a comment

#This is a comment

2value

first-name

var

_totalAmount

keyword

function

Declaration Statement

Data type

Display()

Prompt()

Alert()

Confirm()

==

=

===

!=

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.

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

Division by zero

Missing of semicolons

Syntax error

Both A and B

5myvalue

myvalue5

Myvalue

None of These

::

?:

??

=>

//This is a comment

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/* This is a comment */

Both A and C

var

let

static

public

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

jscript.write("Sky is blue")

document.write("Sky is blue")

print("Sky is blue")

jscript.print("Sky is blue")

document. write()

console.log()

innerHTML

document.getElementById()

document. write()

console.log()

window. alert()

innerHTML

variable carName;

var carName;

vari carName;

dim carName;

7

52

Error

Undefined

=

x

==

*

Prints an exception error

Prints an overflow error

Displays “Infinity”

Prints the value as such

0

1

2

Error

var

let

const

none of the above

Displays a message in an alert box

Prints output to the console

Writes data to a file

Logs an error in the browser console

44

12

6

Error

/

%

*

^

if(a!=null)

if (!a)

if(a!null)

if(a!==null)

=

==

===

!=

Volatile variable

Mutable variable

Immutable variable

Dynamic variable

22

4

2

syntax error