_ How to calculate the run time of a code?$?

Start time ‚Äö√Ñ√¨ End time

End time ‚Äö√Ñ√¨ Start time

_ What is the purpose of the UgilifyJS?$?

Both Exposes a simple API and Minification

_ What is the purpose of the property width belonging to the ImageData element?$?

Number of pixels per row of data

_Which of the following are ways to benchmark code?$?

Calculating the number of operations performed

Timing the code & Calculating the number of operations performed

_What is the purpose of the method JSON.parse()?$?

Parses a string from JSON to JSON2

What is the purpose of the method ActiveXObject()?

Used to reference automation object

Used to instantiate automation object

What kind of an exception will be thrown if the string to parse is not valid JSON?

Both SyntaxError and ArrayOutOfBoundException

What does the getInputHtml() return?

Fieldtype‚Äö√Ñ√¥s input HTML

What is the purpose of the parameter $value?

Field‚Äö√Ñ√¥s probability value

Field‚Äö√Ñ√¥s expected value

Field‚Äö√Ñ√¥s previous value

Field‚Äö√Ñ√¥s current value

Field‚Äö√Ñ√¥s probability value

What is the necessity to create a separate file after having an API key?

To hold configuration information

To hold the speed of the process

87 + Mcqs in Parsing, Benchmarking And Logging in Javascript Page 2 McqOptions

51.	_ How do you specifically execute a command in JavaScript?$?
A.	execcommand()
B.	exec(command)
C.	execCommand()
D.	exec(command id)
Answer» D. exec(command id)

Discussion

52.	_ Which of the following attribute of form tag is not set by using document object in JavaScript?$?
A.	Target
B.	Enctype
C.	Action
D.	None of the mentioned
Answer» E.

Discussion

53.	_ How to calculate the run time of a code?$?
A.	Start time ‚Äö√Ñ√¨ End time
B.	End time ‚Äö√Ñ√¨ Start time
C.	Start time/ End time
D.	Start time * End time
Answer» C. Start time/ End time

Discussion

54.	_ What is the purpose of the UgilifyJS?$?
A.	Exposes a simple API
B.	Minification
C.	Both Exposes a simple API and Minification
D.	None of the mentioned
Answer» D. None of the mentioned

Discussion

55.	_ What is the return type of the method parseInt()?$?
A.	String
B.	Float
C.	Integer
D.	Date
Answer» D. Date

Discussion

56.	_ What is the purpose of the property width belonging to the ImageData element?$?
A.	Number of data
B.	Number of pixels
C.	Number of pixels per row of data
D.	All of the mentioned
Answer» D. All of the mentioned

Discussion

57.	_ What will happen if the fvonly parameter is set to 1?$?
A.	Results got for the first view
B.	Can run the repeat view test
C.	Can run the repeat view test
D.	None of the mentioned
Answer» B. Can run the repeat view test

Discussion

58.	_What will be the radix value if the string begins with 0x?$?
A.	13
B.	14
C.	15
D.	16
Answer» E.

Discussion

59.	_What is the purpose of the url json?$?
A.	Belongs to JSON object
B.	Reference JSON formatted data
C.	Belongs to JSON
D.	None of the mentioned
Answer» C. Belongs to JSON

Discussion

60.	_Which of the following method will wait for certain milliseconds to execute a specified method?$?
A.	setInterval()
B.	setTimeout()
C.	setmilli()
D.	setseconds()
Answer» B. setTimeout()

Discussion

61.	_What is the significance of the JavaScript logging library log4javascript?$?
A.	Fully featured
B.	Easy to use
C.	Fully featured and Easy to use
D.	None of the mentioned
Answer» D. None of the mentioned

Discussion

62.	_Which is the method used to process on the input‚Äö√Ñ√¥s post data before it is saved to the database?$?
A.	prep()
B.	settings()
C.	defineSettings()
D.	prepSettings()
Answer» E.

Discussion

63.	_How many events does the BaseFieldType provide?$?
A.	1
B.	2
C.	3
D.	4
Answer» D. 4

Discussion

64.	_How can you dispatch a synthetic event object?$?
A.	dispatchEvent()
B.	dispatch()
C.	dispatch(Event)
D.	None of the mentioned
Answer» B. dispatch()

Discussion

65.	_Which function is used to start the time logging?$?
A.	startTimeLogging()
B.	start()
C.	Loggingstart()
D.	startLogging()
Answer» B. start()

Discussion

66.	_Which of the following are ways to benchmark code?$?
A.	Timing the code
B.	Calculating the number of operations performed
C.	Timing the code & Calculating the number of operations performed
D.	None of the mentioned
Answer» D. None of the mentioned

Discussion

67.	_Which of the following is a JavaScript Compressor?$?
A.	Esprima
B.	UgilifyJS
C.	Acron
D.	None of the mentioned
Answer» C. Acron

Discussion

68.	_What is the purpose of the method JSON.parse()?$?
A.	Parses a string to integer
B.	Parses a string to JSON
C.	Parses a string from JSON to JSON2
D.	None of the mentioned
Answer» C. Parses a string from JSON to JSON2

Discussion

69.	_What is the return data type of the property accept that belongs to the Input element?$?
A.	integer
B.	string
C.	boolean
D.	float
Answer» C. boolean

Discussion

70.	What is the purpose of the parameter location?$?
A.	Specifies agent location
B.	Specifies speed
C.	Specifies browser
D.	All of the mentioned
Answer» E.

Discussion

71.	What will happen if the radix parameter of the parseInt() function is omitted?
A.	Runs in assumption
B.	Throws exception
C.	Aborts
D.	Taken as 0
Answer» B. Throws exception

Discussion

72.	What is the purpose of the method ActiveXObject()?
A.	Used to call automation object
B.	Used to reference automation object
C.	Used to instantiate automation object
D.	All of the mentioned
Answer» D. All of the mentioned

Discussion

73.	Which of the following browsers support the usage of the JavaScript logging library log4javascript?
A.	IE
B.	Safari
C.	Opera
D.	All of the mentioned
Answer» E.

Discussion

74.	How many arguments does the getInputHtml() accept?
A.	1
B.	2
C.	3
D.	4
Answer» C. 3

Discussion

75.	When does the defineContentAttribute() method return a false?
A.	Data stored in different table
B.	Data stored in its own table
C.	Data is not stored at all
D.	Data is not obtained
Answer» C. Data is not stored at all

Discussion

76.	What kind of an exception will be thrown if the string to parse is not valid JSON?
A.	SyntaxError
B.	ArrayOutOfBoundException
C.	Both SyntaxError and ArrayOutOfBoundException
D.	None of the mentioned
Answer» B. ArrayOutOfBoundException

Discussion

77.	What will be the radix value of the parseInt() method when the string begins with 0?
A.	6
B.	7
C.	8
D.	9
Answer» D. 9

Discussion

78.	To which of the following object does the print() method belong to?
A.	window
B.	document
C.	hash
D.	none of the mentioned
Answer» B. document

Discussion

79.	What is the purpose of the window.location object in JavaScript?
A.	Get the URL and redirect
B.	Get the location of the cursor
C.	Get the path to the next page
D.	All of the mentioned
Answer» B. Get the location of the cursor

Discussion

80.	What is the significance of the JavaScript logging library loglevel?
A.	Lightweight
B.	Unreliable
C.	Minimal usage
D.	Inconvenient
Answer» B. Unreliable

Discussion

81.	What does the getInputHtml() return?
A.	Input
B.	Fieldtype‚Äö√Ñ√¥s input HTML
C.	Array
D.	Value
Answer» C. Array

Discussion

82.	What is the purpose of the parameter $value?
A.	Field‚Äö√Ñ√¥s expected value
B.	Field‚Äö√Ñ√¥s previous value
C.	Field‚Äö√Ñ√¥s current value
D.	Field‚Äö√Ñ√¥s probability value
Answer» D. Field‚Äö√Ñ√¥s probability value

Discussion

83.	What is the function of the method importNode()?
A.	Copies without removing
B.	Copies and removes
C.	Only copies
D.	Only removes
Answer» B. Copies and removes

Discussion

84.	Which of the following object is used to post the data to an external process, say savePerfData?
A.	XML
B.	XBT
C.	XHR
D.	None of the mentioned
Answer» D. None of the mentioned

Discussion

85.	What will be the radix value of the parseInt() method when the string begins with any other value other than 0x and 0?
A.	8
B.	9
C.	10
D.	11
Answer» D. 11

Discussion

86.	What is the purpose of the radix parameter in the parseInt() method?
A.	Numeral system not to be used
B.	Numeral system to be used
C.	Convertion mode
D.	None of the mentioned
Answer» C. Convertion mode

Discussion

87.	What is the necessity to create a separate file after having an API key?
A.	To hold configuration information
B.	To hold key details
C.	To hold URL details
D.	To hold the speed of the process
Answer» B. To hold key details

Discussion

Explore topic-wise MCQs in Javascript.

_ How do you specifically execute a command in JavaScript?$?

_ Which of the following attribute of form tag is not set by using document object in JavaScript?$?

_ How to calculate the run time of a code?$?

_ What is the purpose of the UgilifyJS?$?

_ What is the return type of the method parseInt()?$?

_ What is the purpose of the property width belonging to the ImageData element?$?

_ What will happen if the fvonly parameter is set to 1?$?

_What will be the radix value if the string begins with 0x?$?

_What is the purpose of the url json?$?

_Which of the following method will wait for certain milliseconds to execute a specified method?$?

_What is the significance of the JavaScript logging library log4javascript?$?

_Which is the method used to process on the input‚Äö√Ñ√¥s post data before it is saved to the database?$?

_How many events does the BaseFieldType provide?$?

_How can you dispatch a synthetic event object?$?

_Which function is used to start the time logging?$?

_Which of the following are ways to benchmark code?$?

_Which of the following is a JavaScript Compressor?$?

_What is the purpose of the method JSON.parse()?$?

_What is the return data type of the property accept that belongs to the Input element?$?

What is the purpose of the parameter location?$?

What will happen if the radix parameter of the parseInt() function is omitted?

What is the purpose of the method ActiveXObject()?

Which of the following browsers support the usage of the JavaScript logging library log4javascript?

How many arguments does the getInputHtml() accept?

When does the defineContentAttribute() method return a false?

What kind of an exception will be thrown if the string to parse is not valid JSON?

What will be the radix value of the parseInt() method when the string begins with 0?

To which of the following object does the print() method belong to?

What is the purpose of the window.location object in JavaScript?

What is the significance of the JavaScript logging library loglevel?

What does the getInputHtml() return?

What is the purpose of the parameter $value?

What is the function of the method importNode()?

Which of the following object is used to post the data to an external process, say savePerfData?

What will be the radix value of the parseInt() method when the string begins with any other value other than 0x and 0?

What is the purpose of the radix parameter in the parseInt() method?

What is the necessity to create a separate file after having an API key?